21,061 in words
21,061
twenty-one thousand sixty-one
21,061 is written twenty-one thousand sixty-one.
Ways to write it
- As an ordinal
- twenty-one thousand sixty-first
- Expanded form
- 20,000 + 1,000 + 60 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 6 | 60 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 21,061 (2 factors)
- First 10 multiples
- 21,061, 42,122, 63,183, 84,244, 105,305, 126,366, 147,427, 168,488, 189,549, 210,610
- Square
- 21,061 × 21,061 = 443,565,721
- Square root
- ≈ 145.12
- Sum of the digits
- 2 + 1 + 0 + 6 + 1 = 10
- Rounded to the nearest 10
- 21,060
- Rounded to the nearest 100
- 21,100
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,060
- Number after
- 21,062
- In binary
101001001000101
Quick check
What number comes just after 21,061?
Show the answer
21,062
Is 21,061 even or odd?
Show the answer
Odd
What is 21,061 + 10?
Show the answer
21,071
Practice 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 21,061 in words?
21,061 is written "twenty-one thousand sixty-one".
Is 21,061 a prime number?
Yes. 21,061 is a prime number: its only factors are 1 and 21,061.
What are the factors of 21,061?
The factors of 21,061 are 1 and 21,061.