Base | Representation |
---|---|
bin | 1110100011101… |
… | …10110001101001 |
3 | 22111210101221220 |
4 | 13101312301221 |
5 | 222230340241 |
6 | 20041252253 |
7 | 3012004560 |
oct | 721666151 |
9 | 274711856 |
10 | 122121321 |
11 | 62a30613 |
12 | 34a94089 |
13 | 1c3ba64a |
14 | 1230cbd7 |
15 | aac4166 |
hex | 7476c69 |
122121321 has 16 divisors (see below), whose sum is σ = 186547200. Its totient is φ = 69612048.
The previous prime is 122121301. The next prime is 122121323. The reversal of 122121321 is 123121221.
It is not a de Polignac number, because 122121321 - 26 = 122121257 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 122121321.
It is not an unprimeable number, because it can be changed into a prime (122121323) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860 + ... + 15738.
It is an arithmetic number, because the mean of its divisors is an integer number (11659200).
Almost surely, 2122121321 is an apocalyptic number.
It is an amenable number.
122121321 is a deficient number, since it is larger than the sum of its proper divisors (64425879).
122121321 is a wasteful number, since it uses less digits than its factorization.
122121321 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14308.
The product of its digits is 48, while the sum is 15.
The square root of 122121321 is about 11050.8515961441. The cubic root of 122121321 is about 496.1319143259.
Adding to 122121321 its reverse (123121221), we get a palindrome (245242542).
The spelling of 122121321 in words is "one hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty-one".
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