21,077 in words
21,077
twenty-one thousand and seventy-seven
21,077 is written twenty-one thousand and seventy-seven.
Ways to write it
- As an ordinal
- twenty-one thousand and seventy-seventh
- Expanded form
- 20,000 + 1,000 + 70 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 7 | 70 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 7, 3,011 and 21,077 (4 factors)
- First 10 multiples
- 21,077, 42,154, 63,231, 84,308, 105,385, 126,462, 147,539, 168,616, 189,693, 210,770
- Square
- 21,077 × 21,077 = 444,239,929
- Square root
- ≈ 145.18
- Sum of the digits
- 2 + 1 + 0 + 7 + 7 = 17
- Rounded to the nearest 10
- 21,080
- Rounded to the nearest 100
- 21,100
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,076
- Number after
- 21,078
- In binary
101001001010101
Quick check
What number comes just after 21,077?
Show the answer
21,078
Is 21,077 even or odd?
Show the answer
Odd
What is 21,077 + 10?
Show the answer
21,087
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 21,077 in words?
21,077 is written "twenty-one thousand and seventy-seven".
Is 21,077 a prime number?
No. 21,077 is a composite number, because it has more than two factors.
What are the factors of 21,077?
The factors of 21,077 are 1, 7, 3,011 and 21,077.