111222042312 has 64 divisors (see below), whose sum is σ = 278970289920. Its totient is φ = 36952109568.

The previous prime is 111222042233. The next prime is 111222042329. The reversal of 111222042312 is 213240222111.

It is a happy number.

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, 28685718 + ... + 28689594.

It is an arithmetic number, because the mean of its divisors is an integer number (4358910780).

Almost surely, 2^111222042312 is an apocalyptic number.

111222042312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111222042312 is an abundant number, since it is smaller than the sum of its proper divisors (167748247608).

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

111222042312 is a wasteful number, since it uses less digits than its factorization.

111222042312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510 (or 7506 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111222042312 its reverse (213240222111), we get a palindrome (324462264423).

The spelling of 111222042312 in words is "one hundred eleven billion, two hundred twenty-two million, forty-two thousand, three hundred twelve".