7,221 in words
7,221
seven thousand two hundred twenty-one
7,221 is written seven thousand two hundred twenty-one.
Ways to write it
- As an ordinal
- seven thousand two hundred twenty-first
- Expanded form
- 7,000 + 200 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 7 | 7,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 29, 83, 87, 249, 2,407 and 7,221 (8 factors)
- First 10 multiples
- 7,221, 14,442, 21,663, 28,884, 36,105, 43,326, 50,547, 57,768, 64,989, 72,210
- Square
- 7,221 × 7,221 = 52,142,841
- Square root
- ≈ 84.98
- Sum of the digits
- 7 + 2 + 2 + 1 = 12
- Rounded to the nearest 10
- 7,220
- Rounded to the nearest 100
- 7,200
- Rounded to the nearest 1000
- 7,000
- Number before
- 7,220
- Number after
- 7,222
- In binary
1110000110101
Quick check
What number comes just after 7,221?
Show the answer
7,222
Is 7,221 even or odd?
Show the answer
Odd
What is 7,221 + 10?
Show the answer
7,231
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 7,221 in words?
7,221 is written "seven thousand two hundred twenty-one".
Is 7,221 a prime number?
No. 7,221 is a composite number, because it has more than two factors.
What are the factors of 7,221?
The factors of 7,221 are 1, 3, 29, 83, 87, 249, 2,407 and 7,221.