Roman numerals XXI

The Roman numeral XXI corresponds to the Arabic number 21.

XXI = 21

How to read and how to write XXI

Symbols are written and read from left to right, from highest to lowest.

How to read XXI, one group of symbols at a time:

• 20 = XX
• 1 = I

Adding them up: 20 + 1 = 21.

See how to write 21 in Roman numerals.

If the numeral XXI appears in a text or sentence, it is read as its Arabic equivalent, in this case 21.

Previous number

XX is number 20

Next number

XXII is number 22

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