1,21,997 in words
1,21,997
one lakh twenty-one thousand nine hundred and ninety-seven
1,21,997 is written one lakh twenty-one thousand nine hundred and ninety-seven.
Ways to write it
- International system
- one hundred and twenty-one thousand nine hundred and ninety-seven
- Indian system
- one lakh twenty-one thousand nine hundred and ninety-seven
- As an ordinal
- one lakh twenty-one thousand nine hundred and ninety-seventh
- Expanded form
- 1,00,000 + 20,000 + 1,000 + 900 + 90 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| lakhs | 1 | 1,00,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 9 | 900 |
| tens | 9 | 90 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 1,21,997 (2 factors)
- First 10 multiples
- 1,21,997, 2,43,994, 3,65,991, 4,87,988, 6,09,985, 7,31,982, 8,53,979, 9,75,976, 10,97,973, 12,19,970
- Square
- 1,21,997 × 1,21,997 = 14,88,32,68,009
- Square root
- ≈ 349.28
- Sum of the digits
- 1 + 2 + 1 + 9 + 9 + 7 = 29
- Rounded to the nearest 10
- 1,22,000
- Rounded to the nearest 100
- 1,22,000
- Rounded to the nearest 1000
- 1,22,000
- Number before
- 1,21,996
- Number after
- 1,21,998
- In binary
11101110010001101
Quick check
What number comes just after 1,21,997?
Show the answer
1,21,998
Is 1,21,997 even or odd?
Show the answer
Odd
What is 1,21,997 + 10?
Show the answer
1,22,007
Practise with a game
Factors, Multiples & Primes
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Number Patterns
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How do you write 1,21,997 in words?
1,21,997 is written "one lakh twenty-one thousand nine hundred and ninety-seven".
Is 1,21,997 a prime number?
Yes. 1,21,997 is a prime number: its only factors are 1 and 1,21,997.
What are the factors of 1,21,997?
The factors of 1,21,997 are 1 and 1,21,997.