80,021 in words
80,021
eighty thousand twenty-one
80,021 is written eighty thousand twenty-one.
Ways to write it
- As an ordinal
- eighty thousand twenty-first
- Expanded form
- 80,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 8 | 80,000 |
| thousands | 0 | 0 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 80,021 (2 factors)
- First 10 multiples
- 80,021, 160,042, 240,063, 320,084, 400,105, 480,126, 560,147, 640,168, 720,189, 800,210
- Square
- 80,021 × 80,021 = 6,403,360,441
- Square root
- ≈ 282.88
- Sum of the digits
- 8 + 0 + 0 + 2 + 1 = 11
- Rounded to the nearest 10
- 80,020
- Rounded to the nearest 100
- 80,000
- Rounded to the nearest 1000
- 80,000
- Number before
- 80,020
- Number after
- 80,022
- In binary
10011100010010101
Quick check
What number comes just after 80,021?
Show the answer
80,022
Is 80,021 even or odd?
Show the answer
Odd
What is 80,021 + 10?
Show the answer
80,031
Practice 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 80,021 in words?
80,021 is written "eighty thousand twenty-one".
Is 80,021 a prime number?
Yes. 80,021 is a prime number: its only factors are 1 and 80,021.
What are the factors of 80,021?
The factors of 80,021 are 1 and 80,021.