Base | Representation |
---|---|
bin | 11001000100101… |
… | …10001000001001 |
3 | 112122202212200111 |
4 | 30202112020021 |
5 | 412321030441 |
6 | 32512034321 |
7 | 5132530231 |
oct | 1442261011 |
9 | 478685614 |
10 | 210330121 |
11 | a87a9151 |
12 | 5a5329a1 |
13 | 347631c1 |
14 | 1dd10cc1 |
15 | 136ea081 |
hex | c896209 |
210330121 has 2 divisors, whose sum is σ = 210330122. Its totient is φ = 210330120.
The previous prime is 210330119. The next prime is 210330149. The reversal of 210330121 is 121033012.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 122345721 + 87984400 = 11061^2 + 9380^2 .
It is a cyclic number.
It is not a de Polignac number, because 210330121 - 21 = 210330119 is a prime.
Together with 210330119, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (210330151) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105165060 + 105165061.
It is an arithmetic number, because the mean of its divisors is an integer number (105165061).
Almost surely, 2210330121 is an apocalyptic number.
It is an amenable number.
210330121 is a deficient number, since it is larger than the sum of its proper divisors (1).
210330121 is an equidigital number, since it uses as much as digits as its factorization.
210330121 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 36, while the sum is 13.
The square root of 210330121 is about 14502.7625299458. The cubic root of 210330121 is about 594.7034946657.
Adding to 210330121 its reverse (121033012), we get a palindrome (331363133).
The spelling of 210330121 in words is "two hundred ten million, three hundred thirty thousand, one hundred twenty-one".
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