8,221 in words
8,221
eight thousand two hundred and twenty-one
8,221 is written eight thousand two hundred and twenty-one.
Ways to write it
- As an ordinal
- eight thousand two hundred and twenty-first
- Expanded form
- 8,000 + 200 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 8 | 8,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 8,221 (2 factors)
- First 10 multiples
- 8,221, 16,442, 24,663, 32,884, 41,105, 49,326, 57,547, 65,768, 73,989, 82,210
- Square
- 8,221 × 8,221 = 67,584,841
- Square root
- ≈ 90.67
- Sum of the digits
- 8 + 2 + 2 + 1 = 13
- Rounded to the nearest 10
- 8,220
- Rounded to the nearest 100
- 8,200
- Rounded to the nearest 1000
- 8,000
- Number before
- 8,220
- Number after
- 8,222
- In binary
10000000011101
Quick check
What number comes just after 8,221?
Show the answer
8,222
Is 8,221 even or odd?
Show the answer
Odd
What is 8,221 + 10?
Show the answer
8,231
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 8,221 in words?
8,221 is written "eight thousand two hundred and twenty-one".
Is 8,221 a prime number?
Yes. 8,221 is a prime number: its only factors are 1 and 8,221.
What are the factors of 8,221?
The factors of 8,221 are 1 and 8,221.