100,021 in words
100,021
one hundred thousand twenty-one
100,021 is written one hundred thousand twenty-one.
Ways to write it
- As an ordinal
- one hundred thousand twenty-first
- Expanded form
- 100,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 1 | 100,000 |
| ten thousands | 0 | 0 |
| thousands | 0 | 0 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 29, 3,449 and 100,021 (4 factors)
- First 10 multiples
- 100,021, 200,042, 300,063, 400,084, 500,105, 600,126, 700,147, 800,168, 900,189, 1,000,210
- Square
- 100,021 × 100,021 = 10,004,200,441
- Square root
- ≈ 316.26
- Sum of the digits
- 1 + 0 + 0 + 0 + 2 + 1 = 4
- Rounded to the nearest 10
- 100,020
- Rounded to the nearest 100
- 100,000
- Rounded to the nearest 1000
- 100,000
- Number before
- 100,020
- Number after
- 100,022
- In binary
11000011010110101
Quick check
What number comes just after 100,021?
Show the answer
100,022
Is 100,021 even or odd?
Show the answer
Odd
What is 100,021 + 10?
Show the answer
100,031
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 100,021 in words?
100,021 is written "one hundred thousand twenty-one".
Is 100,021 a prime number?
No. 100,021 is a composite number, because it has more than two factors.
What are the factors of 100,021?
The factors of 100,021 are 1, 29, 3,449 and 100,021.