21,223 in words
21,223
twenty-one thousand two hundred twenty-three
21,223 is written twenty-one thousand two hundred twenty-three.
Ways to write it
- As an ordinal
- twenty-one thousand two hundred twenty-third
- Expanded form
- 20,000 + 1,000 + 200 + 20 + 3
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 3 | 3 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 19, 1,117 and 21,223 (4 factors)
- First 10 multiples
- 21,223, 42,446, 63,669, 84,892, 106,115, 127,338, 148,561, 169,784, 191,007, 212,230
- Square
- 21,223 × 21,223 = 450,415,729
- Square root
- ≈ 145.68
- Sum of the digits
- 2 + 1 + 2 + 2 + 3 = 10
- Rounded to the nearest 10
- 21,220
- Rounded to the nearest 100
- 21,200
- Rounded to the nearest 1000
- 21,000
- Number before
- 21,222
- Number after
- 21,224
- In binary
101001011100111
Quick check
What number comes just after 21,223?
Show the answer
21,224
Is 21,223 even or odd?
Show the answer
Odd
What is 21,223 + 10?
Show the answer
21,233
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 21,223 in words?
21,223 is written "twenty-one thousand two hundred twenty-three".
Is 21,223 a prime number?
No. 21,223 is a composite number, because it has more than two factors.
What are the factors of 21,223?
The factors of 21,223 are 1, 19, 1,117 and 21,223.