115115121 has 32 divisors (see below), whose sum is σ = 192061440. Its totient is φ = 67510800.

The previous prime is 115115111. The next prime is 115115141. The reversal of 115115121 is 121511511.

115115121 is a `hidden beast` number, since 1 + 151 + 1 + 512 + 1 = 666.

It is not a de Polignac number, because 115115121 - 2⁵ = 115115089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115115094 and 115115103.

It is not an unprimeable number, because it can be changed into a prime (115115111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2956 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (6001920).

Almost surely, 2^115115121 is an apocalyptic number.

115115121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115115121 is a deficient number, since it is larger than the sum of its proper divisors (76946319).

115115121 is a wasteful number, since it uses less digits than its factorization.

115115121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12554 (or 12548 counting only the distinct ones).

The product of its digits is 50, while the sum is 18.

The square root of 115115121 is about 10729.1714964390. The cubic root of 115115121 is about 486.4566276862.

Adding to 115115121 its reverse (121511511), we get a palindrome (236626632).

The spelling of 115115121 in words is "one hundred fifteen million, one hundred fifteen thousand, one hundred twenty-one".