21,271 in words
21,271
twenty-one thousand two hundred and seventy-one
21,271 is written twenty-one thousand two hundred and seventy-one.
Ways to write it
- As an ordinal
- twenty-one thousand two hundred and seventy-first
- Expanded form
- 20,000 + 1,000 + 200 + 70 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 2 | 200 |
| tens | 7 | 70 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 89, 239 and 21,271 (4 factors)
- First 10 multiples
- 21,271, 42,542, 63,813, 85,084, 106,355, 127,626, 148,897, 170,168, 191,439, 212,710
- Square
- 21,271 × 21,271 = 452,455,441
- Square root
- ≈ 145.85
- Sum of the digits
- 2 + 1 + 2 + 7 + 1 = 13
- Rounded to the nearest 10
- 21,270
- Rounded to the nearest 100
- 21,300
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,270
- Number after
- 21,272
- In binary
101001100010111
Quick check
What number comes just after 21,271?
Show the answer
21,272
Is 21,271 even or odd?
Show the answer
Odd
What is 21,271 + 10?
Show the answer
21,281
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 21,271 in words?
21,271 is written "twenty-one thousand two hundred and seventy-one".
Is 21,271 a prime number?
No. 21,271 is a composite number, because it has more than two factors.
What are the factors of 21,271?
The factors of 21,271 are 1, 89, 239 and 21,271.