138,221 in words
138,221
one hundred thirty-eight thousand two hundred twenty-one
138,221 is written one hundred thirty-eight thousand two hundred twenty-one.
Ways to write it
- As an ordinal
- one hundred thirty-eight thousand two hundred twenty-first
- Expanded form
- 100,000 + 30,000 + 8,000 + 200 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 1 | 100,000 |
| ten thousands | 3 | 30,000 |
| thousands | 8 | 8,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 67, 2,063 and 138,221 (4 factors)
- First 10 multiples
- 138,221, 276,442, 414,663, 552,884, 691,105, 829,326, 967,547, 1,105,768, 1,243,989, 1,382,210
- Square
- 138,221 × 138,221 = 19,105,044,841
- Square root
- ≈ 371.78
- Sum of the digits
- 1 + 3 + 8 + 2 + 2 + 1 = 17
- Rounded to the nearest 10
- 138,220
- Rounded to the nearest 100
- 138,200
- Rounded to the nearest 1000
- 138,000
- Number before
- 138,220
- Number after
- 138,222
- In binary
100001101111101101
Quick check
What number comes just after 138,221?
Show the answer
138,222
Is 138,221 even or odd?
Show the answer
Odd
What is 138,221 + 10?
Show the answer
138,231
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 138,221 in words?
138,221 is written "one hundred thirty-eight thousand two hundred twenty-one".
Is 138,221 a prime number?
No. 138,221 is a composite number, because it has more than two factors.
What are the factors of 138,221?
The factors of 138,221 are 1, 67, 2,063 and 138,221.