8,121 in words
8,121
eight thousand one hundred twenty-one
8,121 is written eight thousand one hundred twenty-one.
Ways to write it
- As an ordinal
- eight thousand one hundred twenty-first
- Expanded form
- 8,000 + 100 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 8 | 8,000 |
| hundreds | 1 | 100 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 2,707 and 8,121 (4 factors)
- First 10 multiples
- 8,121, 16,242, 24,363, 32,484, 40,605, 48,726, 56,847, 64,968, 73,089, 81,210
- Square
- 8,121 × 8,121 = 65,950,641
- Square root
- ≈ 90.12
- Sum of the digits
- 8 + 1 + 2 + 1 = 12
- Rounded to the nearest 10
- 8,120
- Rounded to the nearest 100
- 8,100
- Rounded to the nearest 1000
- 8,000
- Number before
- 8,120
- Number after
- 8,122
- In binary
1111110111001
Quick check
What number comes just after 8,121?
Show the answer
8,122
Is 8,121 even or odd?
Show the answer
Odd
What is 8,121 + 10?
Show the answer
8,131
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 8,121 in words?
8,121 is written "eight thousand one hundred twenty-one".
Is 8,121 a prime number?
No. 8,121 is a composite number, because it has more than two factors.
What are the factors of 8,121?
The factors of 8,121 are 1, 3, 2,707 and 8,121.