117216115 has 32 divisors (see below), whose sum is σ = 152409600. Its totient is φ = 86338560.

The previous prime is 117216109. The next prime is 117216157. The reversal of 117216115 is 511612711.

It is not a de Polignac number, because 117216115 - 2³ = 117216107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117216115.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 399909 + ... + 400201.

It is an arithmetic number, because the mean of its divisors is an integer number (4762800).

Almost surely, 2^117216115 is an apocalyptic number.

117216115 is a deficient number, since it is larger than the sum of its proper divisors (35193485).

117216115 is a wasteful number, since it uses less digits than its factorization.

117216115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447.

The product of its digits is 420, while the sum is 25.

The square root of 117216115 is about 10826.6391368698. The cubic root of 117216115 is about 489.3982826379.

Adding to 117216115 its reverse (511612711), we get a palindrome (628828826).

The spelling of 117216115 in words is "one hundred seventeen million, two hundred sixteen thousand, one hundred fifteen".