21,107 in words
21,107
twenty-one thousand one hundred seven
21,107 is written twenty-one thousand one hundred seven.
Ways to write it
- As an ordinal
- twenty-one thousand one hundred seventh
- Expanded form
- 20,000 + 1,000 + 100 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 1 | 100 |
| tens | 0 | 0 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 21,107 (2 factors)
- First 10 multiples
- 21,107, 42,214, 63,321, 84,428, 105,535, 126,642, 147,749, 168,856, 189,963, 211,070
- Square
- 21,107 × 21,107 = 445,505,449
- Square root
- ≈ 145.28
- Sum of the digits
- 2 + 1 + 1 + 0 + 7 = 11
- Rounded to the nearest 10
- 21,110
- Rounded to the nearest 100
- 21,100
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,106
- Number after
- 21,108
- In binary
101001001110011
Quick check
What number comes just after 21,107?
Show the answer
21,108
Is 21,107 even or odd?
Show the answer
Odd
What is 21,107 + 10?
Show the answer
21,117
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 21,107 in words?
21,107 is written "twenty-one thousand one hundred seven".
Is 21,107 a prime number?
Yes. 21,107 is a prime number: its only factors are 1 and 21,107.
What are the factors of 21,107?
The factors of 21,107 are 1 and 21,107.