21 in Roman Numerals

How do you write 21 in Roman Numerals?

The Arabic number 21 in roman numerals is XXI.

That is, if you want to write the digit 21 using roman symbols, you must use the symbol or symbols XXI, since these roman numerals are exactly equivalent to the arabic numeral Twenty one.

XXI = 21

How should the Roman Numeral XXI be read?

Roman letters that symbolize numbers should be read and written from left to right and in order of highest to lowest value.

Therefore, in the case of finding in a text the number represented by XXI, it should be read in natural number format. That is, the Roman letters representing 21 should be read as "Twenty one".

How should the number 21 be written in Roman Numerals?

The only existing rule for writing any number in roman numerals, for example 21, is that they should always be written with capital letters.