111211320311112 has 64 divisors (see below), whose sum is σ = 317752613959680. Its totient is φ = 31774064496192.

The previous prime is 111211320311099. The next prime is 111211320311167. The reversal of 111211320311112 is 211113023112111.

111211320311112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2751073 + ... + 15165455.

It is an arithmetic number, because the mean of its divisors is an integer number (4964884593120).

Almost surely, 2^{111211320311112} is an apocalyptic number.

111211320311112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111211320311112 is an abundant number, since it is smaller than the sum of its proper divisors (206541293648568).

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

111211320311112 is a wasteful number, since it uses less digits than its factorization.

111211320311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12467722 (or 12467718 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 111211320311112 its reverse (211113023112111), we get a palindrome (322324343423223).

The spelling of 111211320311112 in words is "one hundred eleven trillion, two hundred eleven billion, three hundred twenty million, three hundred eleven thousand, one hundred twelve".