1,21,521 in words
1,21,521
one lakh twenty-one thousand five hundred and twenty-one
1,21,521 is written one lakh twenty-one thousand five hundred and twenty-one.
Ways to write it
- International system
- one hundred and twenty-one thousand five hundred and twenty-one
- Indian system
- one lakh twenty-one thousand five hundred and twenty-one
- As an ordinal
- one lakh twenty-one thousand five hundred and twenty-first
- Expanded form
- 1,00,000 + 20,000 + 1,000 + 500 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| lakhs | 1 | 1,00,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 5 | 500 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 40,507 and 1,21,521 (4 factors)
- First 10 multiples
- 1,21,521, 2,43,042, 3,64,563, 4,86,084, 6,07,605, 7,29,126, 8,50,647, 9,72,168, 10,93,689, 12,15,210
- Square
- 1,21,521 × 1,21,521 = 14,76,73,53,441
- Square root
- ≈ 348.60
- Sum of the digits
- 1 + 2 + 1 + 5 + 2 + 1 = 12
- Rounded to the nearest 10
- 1,21,520
- Rounded to the nearest 100
- 1,21,500
- Rounded to the nearest 1000
- 1,22,000
- Number before
- 1,21,520
- Number after
- 1,21,522
- In binary
11101101010110001
Quick check
What number comes just after 1,21,521?
Show the answer
1,21,522
Is 1,21,521 even or odd?
Show the answer
Odd
What is 1,21,521 + 10?
Show the answer
1,21,531
Practise with a game
Factors, Multiples & Primes
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Number Patterns
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How do you write 1,21,521 in words?
1,21,521 is written "one lakh twenty-one thousand five hundred and twenty-one".
Is 1,21,521 a prime number?
No. 1,21,521 is a composite number, because it has more than two factors.
What are the factors of 1,21,521?
The factors of 1,21,521 are 1, 3, 40,507 and 1,21,521.