XXI roman numerals Roman Numerals XXI Use the form below to do your conversion, separate numbers by comma. roman numeral XXI in arabic numbers = 21 XXI is Number 21 How to write XXI in word Form Twenty One The roman number XXI in word form means Twenty One which is written as 21 in arabic numeral. The question write XXI in words can be solved easily using this converter.This is a simple translator 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 The number 21 is a positive whole number which can also be divisible by other numbers refered as it's factors or multiples. We get factors of 21 by finding numbers that can divide 21 without remainder or alternatively numbers that can multiply together to equal the whole number 21 being converted. In considering numbers than can divide 21 without remainders. So we start with 1, then check 2,3,4,5,6,7,8,9, etc until we get 21 Getting factors is done by dividing 21 with numbers lower to it in value to find the one that will not leave remainder. Numbers that divide without remainders are the factors. Factors are whole numbers or integers that are multiplied together to produce a given number. The integers or whole numbers multiplied are factors of the given number. If x multiplied by y = z then x and y are factors of z. if for instance you want to find the factors of 20. You will have to find combination of numbers that when it is multiplied together will give 20. Example here is 5 and 4 because when you multiplied them, it will give you 20. so they are factors of the given number 20. Also 1 and 20, 2 and 10 are factors of 20 because 1 x 20 = 20 and 2 x 10 = 20. The factors of the given interger number 20 are 1, 2, 4, 5, 10, 20 Roman numerals are any of the symbols used in the numerical system of notation based on the ancient Roman system. The symbols are I=1, V=5, X=10, L=50, C=100, D=500, and M=1000. Roman numerals are mainly used today in the denotation of book chapters, title of each year’s Football League etc, and in time system to mark hours on clock faces Roman numerals originates from the era of the Roman Empire, in the ancient Rome. It was a numeral system that was used in counting in the ancient Rome and remained the usual way of writing numbers throughout Europe and also into the Middle Ages and mordern days now. It is used in watch and clock calibration till date. Numbers are written with combinations of letters from the Latin alphabet.