16,921 in words
16,921
sixteen thousand nine hundred and twenty-one
16,921 is written sixteen thousand nine hundred and twenty-one.
Ways to write it
- As an ordinal
- sixteen thousand nine hundred and twenty-first
- Expanded form
- 10,000 + 6,000 + 900 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 1 | 10,000 |
| thousands | 6 | 6,000 |
| hundreds | 9 | 900 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 16,921 (2 factors)
- First 10 multiples
- 16,921, 33,842, 50,763, 67,684, 84,605, 101,526, 118,447, 135,368, 152,289, 169,210
- Square
- 16,921 × 16,921 = 286,320,241
- Square root
- ≈ 130.08
- Sum of the digits
- 1 + 6 + 9 + 2 + 1 = 19
- Rounded to the nearest 10
- 16,920
- Rounded to the nearest 100
- 16,900
- Rounded to the nearest 1000
- 17,000
- Number before
- 16,920
- Number after
- 16,922
- In binary
100001000011001
Quick check
What number comes just after 16,921?
Show the answer
16,922
Is 16,921 even or odd?
Show the answer
Odd
What is 16,921 + 10?
Show the answer
16,931
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 16,921 in words?
16,921 is written "sixteen thousand nine hundred and twenty-one".
Is 16,921 a prime number?
Yes. 16,921 is a prime number: its only factors are 1 and 16,921.
What are the factors of 16,921?
The factors of 16,921 are 1 and 16,921.