15,221 in words
15,221
fifteen thousand two hundred twenty-one
15,221 is written fifteen thousand two hundred twenty-one.
Ways to write it
- As an ordinal
- fifteen thousand two hundred twenty-first
- Expanded form
- 10,000 + 5,000 + 200 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 5 | 5,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 31, 491 and 15,221 (4 factors)
- First 10 multiples
- 15,221, 30,442, 45,663, 60,884, 76,105, 91,326, 106,547, 121,768, 136,989, 152,210
- Square
- 15,221 × 15,221 = 231,678,841
- Square root
- ≈ 123.37
- Sum of the digits
- 1 + 5 + 2 + 2 + 1 = 11
- Rounded to the nearest 10
- 15,220
- Rounded to the nearest 100
- 15,200
- Rounded to the nearest 1000
- 15,000
- Number before
- 15,220
- Number after
- 15,222
- In binary
11101101110101
Quick check
What number comes just after 15,221?
Show the answer
15,222
Is 15,221 even or odd?
Show the answer
Odd
What is 15,221 + 10?
Show the answer
15,231
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 15,221 in words?
15,221 is written "fifteen thousand two hundred twenty-one".
Is 15,221 a prime number?
No. 15,221 is a composite number, because it has more than two factors.
What are the factors of 15,221?
The factors of 15,221 are 1, 31, 491 and 15,221.