21,137 in words
21,137
twenty-one thousand one hundred thirty-seven
21,137 is written twenty-one thousand one hundred thirty-seven.
Ways to write it
- As an ordinal
- twenty-one thousand one hundred thirty-seventh
- Expanded form
- 20,000 + 1,000 + 100 + 30 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 1 | 100 |
| tens | 3 | 30 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 23, 919 and 21,137 (4 factors)
- First 10 multiples
- 21,137, 42,274, 63,411, 84,548, 105,685, 126,822, 147,959, 169,096, 190,233, 211,370
- Square
- 21,137 × 21,137 = 446,772,769
- Square root
- ≈ 145.39
- Sum of the digits
- 2 + 1 + 1 + 3 + 7 = 14
- Rounded to the nearest 10
- 21,140
- Rounded to the nearest 100
- 21,100
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,136
- Number after
- 21,138
- In binary
101001010010001
Quick check
What number comes just after 21,137?
Show the answer
21,138
Is 21,137 even or odd?
Show the answer
Odd
What is 21,137 + 10?
Show the answer
21,147
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 21,137 in words?
21,137 is written "twenty-one thousand one hundred thirty-seven".
Is 21,137 a prime number?
No. 21,137 is a composite number, because it has more than two factors.
What are the factors of 21,137?
The factors of 21,137 are 1, 23, 919 and 21,137.