115116111 has 12 divisors (see below), whose sum is σ = 181395240. Its totient is φ = 69767280.

The previous prime is 115116101. The next prime is 115116121. The reversal of 115116111 is 111611511.

It is a happy number.

115116111 is a `hidden beast` number, since 1 + 1 + 51 + 1 + 611 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (115116101) and next prime (115116121).

It is not a de Polignac number, because 115116111 - 2¹¹ = 115114063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115116101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581296 + ... + 581493.

It is an arithmetic number, because the mean of its divisors is an integer number (15116270).

Almost surely, 2^115116111 is an apocalyptic number.

115116111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115116111 is a deficient number, since it is larger than the sum of its proper divisors (66279129).

115116111 is a wasteful number, since it uses less digits than its factorization.

115116111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162806 (or 1162803 counting only the distinct ones).

The product of its digits is 30, while the sum is 18.

The square root of 115116111 is about 10729.2176322414. The cubic root of 115116111 is about 486.4580222052.

Adding to 115116111 its reverse (111611511), we get a palindrome (226727622).

The spelling of 115116111 in words is "one hundred fifteen million, one hundred sixteen thousand, one hundred eleven".