7,21,221 in words
7,21,221
seven lakh twenty-one thousand two hundred and twenty-one
7,21,221 is written seven lakh twenty-one thousand two hundred and twenty-one.
Ways to write it
- International system
- seven hundred and twenty-one thousand two hundred and twenty-one
- Indian system
- seven lakh twenty-one thousand two hundred and twenty-one
- As an ordinal
- seven lakh twenty-one thousand two hundred and twenty-first
- Expanded form
- 7,00,000 + 20,000 + 1,000 + 200 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| lakhs | 7 | 7,00,000 |
| ten thousands | 2 | 20,000 |
| thousands | 1 | 1,000 |
| hundreds | 2 | 200 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 19, 57, 12,653, 37,959, 2,40,407 and 7,21,221 (8 factors)
- First 10 multiples
- 7,21,221, 14,42,442, 21,63,663, 28,84,884, 36,06,105, 43,27,326, 50,48,547, 57,69,768, 64,90,989, 72,12,210
- Square
- 7,21,221 × 7,21,221 = 5,20,15,97,30,841
- Square root
- ≈ 849.25
- Sum of the digits
- 7 + 2 + 1 + 2 + 2 + 1 = 15
- Rounded to the nearest 10
- 7,21,220
- Rounded to the nearest 100
- 7,21,200
- Rounded to the nearest 1000
- 7,21,000
- Number before
- 7,21,220
- Number after
- 7,21,222
- In binary
10110000000101000101
Quick check
What number comes just after 7,21,221?
Show the answer
7,21,222
Is 7,21,221 even or odd?
Show the answer
Odd
What is 7,21,221 + 10?
Show the answer
7,21,231
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 7,21,221 in words?
7,21,221 is written "seven lakh twenty-one thousand two hundred and twenty-one".
Is 7,21,221 a prime number?
No. 7,21,221 is a composite number, because it has more than two factors.
What are the factors of 7,21,221?
The factors of 7,21,221 are 1, 3, 19, 57, 12,653, 37,959, 2,40,407 and 7,21,221.