111231012023212 has 12 divisors (see below), whose sum is σ = 194654723699016. Its totient is φ = 55615376680640.

The previous prime is 111231012023203. The next prime is 111231012023297. The reversal of 111231012023212 is 212320210132111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30384589 + ... + 33847972.

It is an arithmetic number, because the mean of its divisors is an integer number (16221226974918).

Almost surely, 2^{111231012023212} is an apocalyptic number.

It is an amenable number.

111231012023212 is a deficient number, since it is larger than the sum of its proper divisors (83423711675804).

111231012023212 is a wasteful number, since it uses less digits than its factorization.

111231012023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64665488 (or 64665486 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 111231012023212 its reverse (212320210132111), we get a palindrome (323551222155323).

The spelling of 111231012023212 in words is "one hundred eleven trillion, two hundred thirty-one billion, twelve million, twenty-three thousand, two hundred twelve".