21 in Roman Numerals
Roman numeral
21 = XXI
10 + 10 + 1 = X + X + I
The number 21 is written as XXI in Roman numerals, formed by adding X + X + I (10 + 10 + 1).
Nearby numbers
| Number | Roman numeral |
|---|---|
| 10 | X |
| 19 | XIX |
| 20 | XX |
| 21 | XXI |
| 22 | XXII |
| 23 | XXIII |
| 50 | L |
| 100 | C |
| 500 | D |
| 1000 | M |
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Frequently asked questions
What is 21 in Roman numerals?+
21 in Roman numerals is XXI.
How is 21 written in Roman numerals?+
21 breaks down as 10 + 10 + 1 = X + X + I, which is written XXI.