XXI Roman Numerals
XXI
21
twenty-one
How to read XXI
| Symbols | Value | Running total |
|---|---|---|
| X | 10 | 10 |
| X | 10 | 20 |
| I | 1 | 21 |
| XXI | 21 |
XXI has no subtractive pair: read it from left to right and add, 20 + 1 = 21.
Is XXI a year?
On its own, XXI is just 21. If it stands for a year, 2021 is written MMXXI. Convert a year
Easy to confuse with XXI
Where you'll see XXI
Super Bowl XXI was played on January 25, 1987 at Rose Bowl in Pasadena: the New York Giants beat the Denver Broncos 39–20.
The Games of the XXI Olympiad were held in Montreal in 1976.
The XXI Olympic Winter Games were held in Vancouver in 2010.
Century XXI
Century XXI is the 21st century: it runs from 2001 to 2100.
Numerals near XXI
Is XXI written correctly?
- Standard form
- Yes
- Letters
- 3
- Subtractive pairs
- None
- Symbols used
- X, I