21,002 in words
21,002
twenty-one thousand and two
21,002 is written twenty-one thousand and two.
Ways to write it
- As an ordinal
- twenty-one thousand and second
- Expanded form
- 20,000 + 1,000 + 2
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 0 | 0 |
| ones | 2 | 2 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 10,501 and 21,002 (4 factors)
- First 10 multiples
- 21,002, 42,004, 63,006, 84,008, 105,010, 126,012, 147,014, 168,016, 189,018, 210,020
- Square
- 21,002 × 21,002 = 441,084,004
- Square root
- ≈ 144.92
- Sum of the digits
- 2 + 1 + 0 + 0 + 2 = 5
- Rounded to the nearest 10
- 21,000
- Rounded to the nearest 100
- 21,000
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,001
- Number after
- 21,003
- In binary
101001000001010
Quick check
What number comes just after 21,002?
Show the answer
21,003
Is 21,002 even or odd?
Show the answer
Even
What is 21,002 + 10?
Show the answer
21,012
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 21,002 in words?
21,002 is written "twenty-one thousand and two".
Is 21,002 a prime number?
No. 21,002 is a composite number, because it has more than two factors.
What are the factors of 21,002?
The factors of 21,002 are 1, 2, 10,501 and 21,002.