11 in Roman Numerals
XI
11 in Roman numerals is XI, and is spelled eleven.
How to write 11 in Roman numerals
To write 11 in Roman numerals, combine X (10) and I (1) to get XI.
The numeral XI is read from left to right, from the largest value to the smallest, adding each symbol as you go.
| Value | Roman |
|---|---|
| 10 | X |
| 1 | I |
| 11 | XI |
Facts about the number 11
- 11 is an odd number.
- 11 is a prime number: it has no divisors other than 1 and itself.
- The digits of 11 add up to 2.
- 11 has 2 divisors.
11 in other number systems
| Decimal | 11 |
| Roman | XI |
| Binary | 1011 |
| Octal | 13 |
| Hexadecimal | B |
Frequently asked questions
How do you write 11 in Roman numerals?
11 is written as XI in Roman numerals.
What does the Roman numeral XI mean?
XI represents the number 11 (eleven).
Is 11 a prime number?
Yes, 11 is a prime number.
What is 11 in binary and hexadecimal?
11 is 1011 in binary and B in hexadecimal.
Related numbers
Or open 11 in the converter and browse the full Roman numerals chart.