115995121 has 16 divisors (see below), whose sum is σ = 129300480. Its totient is φ = 103168080.

The previous prime is 115995101. The next prime is 115995137. The reversal of 115995121 is 121599511.

It is a cyclic number.

It is not a de Polignac number, because 115995121 - 2⁷ = 115994993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115995101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237940 + ... + 238426.

It is an arithmetic number, because the mean of its divisors is an integer number (8081280).

Almost surely, 2^115995121 is an apocalyptic number.

115995121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115995121 is a deficient number, since it is larger than the sum of its proper divisors (13305359).

115995121 is a wasteful number, since it uses less digits than its factorization.

115995121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its digits is 4050, while the sum is 34.

The square root of 115995121 is about 10770.1031099985. The cubic root of 115995121 is about 487.6930584029.

The spelling of 115995121 in words is "one hundred fifteen million, nine hundred ninety-five thousand, one hundred twenty-one".