111211110212112 has 80 divisors (see below), whose sum is σ = 319218508440000. Its totient is φ = 37070203677696.

The previous prime is 111211110212057. The next prime is 111211110212113. The reversal of 111211110212112 is 211212011112111.

111211110212112 is a `hidden beast` number, since 111 + 211 + 110 + 21 + 211 + 2 = 666.

It is a super-2 number, since 2×111211110212112² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111211110212113) 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, 129781639 + ... + 130635737.

It is an arithmetic number, because the mean of its divisors is an integer number (3990231355500).

Almost surely, 2^{111211110212112} is an apocalyptic number.

111211110212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111211110212112 is an abundant number, since it is smaller than the sum of its proper divisors (208007398227888).

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

111211110212112 is a wasteful number, since it uses less digits than its factorization.

111211110212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155525 (or 1155513 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 111211110212112 its reverse (211212011112111), we get a palindrome (322423121324223).

The spelling of 111211110212112 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred ten million, two hundred twelve thousand, one hundred twelve".