10,721 in words
10,721
ten thousand seven hundred and twenty-one
10,721 is written ten thousand seven hundred and twenty-one.
Ways to write it
- As an ordinal
- ten thousand seven hundred and twenty-first
- Expanded form
- 10,000 + 700 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 0 | 0 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 71, 151 and 10,721 (4 factors)
- First 10 multiples
- 10,721, 21,442, 32,163, 42,884, 53,605, 64,326, 75,047, 85,768, 96,489, 107,210
- Square
- 10,721 × 10,721 = 114,939,841
- Square root
- ≈ 103.54
- Sum of the digits
- 1 + 0 + 7 + 2 + 1 = 11
- Rounded to the nearest 10
- 10,720
- Rounded to the nearest 100
- 10,700
- Rounded to the nearest 1000
- 11,000
- Number before
- 10,720
- Number after
- 10,722
- In binary
10100111100001
Quick check
What number comes just after 10,721?
Show the answer
10,722
Is 10,721 even or odd?
Show the answer
Odd
What is 10,721 + 10?
Show the answer
10,731
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 10,721 in words?
10,721 is written "ten thousand seven hundred and twenty-one".
Is 10,721 a prime number?
No. 10,721 is a composite number, because it has more than two factors.
What are the factors of 10,721?
The factors of 10,721 are 1, 71, 151 and 10,721.