115105111101 has 8 divisors (see below), whose sum is σ = 170526090560. Its totient is φ = 76736740716.

The previous prime is 115105111087. The next prime is 115105111103. The reversal of 115105111101 is 101111501511.

115105111101 is a `hidden beast` number, since 1 + 1 + 51 + 0 + 511 + 1 + 101 = 666.

It is not a de Polignac number, because 115105111101 - 2⁷ = 115105110973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115105111103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2131576105 + ... + 2131576158.

It is an arithmetic number, because the mean of its divisors is an integer number (21315761320).

Almost surely, 2^115105111101 is an apocalyptic number.

It is an amenable number.

115105111101 is a deficient number, since it is larger than the sum of its proper divisors (55420979459).

115105111101 is an equidigital number, since it uses as much as digits as its factorization.

115105111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263152272 (or 4263152266 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 18.

Adding to 115105111101 its reverse (101111501511), we get a palindrome (216216612612).

The spelling of 115105111101 in words is "one hundred fifteen billion, one hundred five million, one hundred eleven thousand, one hundred one".