221 in Roman Numerals
CCXXI
221 in Roman numerals is CCXXI, and is spelled two hundred twenty-one.
How to write 221 in Roman numerals
To write 221 in Roman numerals, combine CC (200), XX (20) and I (1) to get CCXXI.
The numeral CCXXI is read from left to right, from the largest value to the smallest, adding each symbol as you go.
| Value | Roman |
|---|---|
| 200 | CC |
| 20 | XX |
| 1 | I |
| 221 | CCXXI |
Facts about the number 221
- 221 is an odd number.
- 221 is a composite number. Its prime factorization is 13 × 17.
- The digits of 221 add up to 5.
- 221 has 4 divisors.
221 in other number systems
| Decimal | 221 |
| Roman | CCXXI |
| Binary | 11011101 |
| Octal | 335 |
| Hexadecimal | DD |
Frequently asked questions
How do you write 221 in Roman numerals?
221 is written as CCXXI in Roman numerals.
What does the Roman numeral CCXXI mean?
CCXXI represents the number 221 (two hundred twenty-one).
Is 221 a prime number?
No, 221 is a composite number.
What is 221 in binary and hexadecimal?
221 is 11011101 in binary and DD in hexadecimal.
Related numbers
Or open 221 in the converter and browse the full Roman numerals chart.