111011111112 has 64 divisors (see below), whose sum is σ = 305755248960. Its totient is φ = 33306656000.

The previous prime is 111011111111. The next prime is 111011111119. The reversal of 111011111112 is 211111110111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (111011111111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2055003 + ... + 2108330.

It is an arithmetic number, because the mean of its divisors is an integer number (4777425765).

Almost surely, 2^111011111112 is an apocalyptic number.

111011111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111011111112 is an abundant number, since it is smaller than the sum of its proper divisors (194744137848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111011111112 is a wasteful number, since it uses less digits than its factorization.

111011111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163454 (or 4163450 counting only the distinct ones).

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

Adding to 111011111112 its reverse (211111110111), we get a palindrome (322122221223).

The spelling of 111011111112 in words is "one hundred eleven billion, eleven million, one hundred eleven thousand, one hundred twelve".