111102312012 has 48 divisors (see below), whose sum is σ = 262235014272. Its totient is φ = 36608266240.

The previous prime is 111102311963. The next prime is 111102312043. The reversal of 111102312012 is 210213201111.

It is a junction number, because it is equal to n+sod(n) for n = 111102311982 and 111102312000.

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, 266503 + ... + 541505.

It is an arithmetic number, because the mean of its divisors is an integer number (5463229464).

Almost surely, 2^111102312012 is an apocalyptic number.

111102312012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111102312012 is an abundant number, since it is smaller than the sum of its proper divisors (151132702260).

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

111102312012 is a wasteful number, since it uses less digits than its factorization.

111102312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275398 (or 275396 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111102312012 its reverse (210213201111), we get a palindrome (321315513123).

The spelling of 111102312012 in words is "one hundred eleven billion, one hundred two million, three hundred twelve thousand, twelve".