7,121 in words
7,121
seven thousand one hundred and twenty-one
7,121 is written seven thousand one hundred and twenty-one.
Ways to write it
- As an ordinal
- seven thousand one hundred and twenty-first
- Expanded form
- 7,000 + 100 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 7 | 7,000 |
| hundreds | 1 | 100 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 7,121 (2 factors)
- First 10 multiples
- 7,121, 14,242, 21,363, 28,484, 35,605, 42,726, 49,847, 56,968, 64,089, 71,210
- Square
- 7,121 × 7,121 = 50,708,641
- Square root
- ≈ 84.39
- Sum of the digits
- 7 + 1 + 2 + 1 = 11
- Rounded to the nearest 10
- 7,120
- Rounded to the nearest 100
- 7,100
- Rounded to the nearest 1000
- 7,000
- Number before
- 7,120
- Number after
- 7,122
- In binary
1101111010001
Quick check
What number comes just after 7,121?
Show the answer
7,122
Is 7,121 even or odd?
Show the answer
Odd
What is 7,121 + 10?
Show the answer
7,131
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 7,121 in words?
7,121 is written "seven thousand one hundred and twenty-one".
Is 7,121 a prime number?
Yes. 7,121 is a prime number: its only factors are 1 and 7,121.
What are the factors of 7,121?
The factors of 7,121 are 1 and 7,121.