111112111011 has 32 divisors (see below), whose sum is σ = 163681896960. Its totient is φ = 66484352000.

The previous prime is 111112111007. The next prime is 111112111031. The reversal of 111112111011 is 110111211111.

It is not a de Polignac number, because 111112111011 - 2² = 111112111007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111112111031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129330 + ... + 1223768.

It is an arithmetic number, because the mean of its divisors is an integer number (5115059280).

Almost surely, 2^111112111011 is an apocalyptic number.

111112111011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111112111011 is a deficient number, since it is larger than the sum of its proper divisors (52569785949).

111112111011 is a wasteful number, since it uses less digits than its factorization.

111112111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94907.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 111112111011 its reverse (110111211111), we get a palindrome (221223322122).

The spelling of 111112111011 in words is "one hundred eleven billion, one hundred twelve million, one hundred eleven thousand, eleven".