21,010 in words
21,010
twenty-one thousand ten
21,010 is written twenty-one thousand ten.
Ways to write it
- As an ordinal
- twenty-one thousand tenth
- Expanded form
- 20,000 + 1,000 + 10
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 1 | 10 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1,910, 2,101, 4,202, 10,505 and 21,010 (16 factors)
- First 10 multiples
- 21,010, 42,020, 63,030, 84,040, 105,050, 126,060, 147,070, 168,080, 189,090, 210,100
- Square
- 21,010 × 21,010 = 441,420,100
- Square root
- ≈ 144.95
- Sum of the digits
- 2 + 1 + 0 + 1 + 0 = 4
- Rounded to the nearest 10
- 21,010
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,009
- Number after
- 21,011
- In binary
101001000010010
Quick check
What number comes just after 21,010?
Show the answer
21,011
Is 21,010 even or odd?
Show the answer
Even
What is 21,010 + 10?
Show the answer
21,020
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 21,010 in words?
21,010 is written "twenty-one thousand ten".
Is 21,010 a prime number?
No. 21,010 is a composite number, because it has more than two factors.
What are the factors of 21,010?
The factors of 21,010 are 1, 2, 5, 10, 11, 22, 55, 110, 191, 382, 955, 1,910, 2,101, 4,202, 10,505 and 21,010.