111311233212 has 12 divisors (see below), whose sum is σ = 259726210856. Its totient is φ = 37103744400.

The previous prime is 111311233211. The next prime is 111311233219. The reversal of 111311233212 is 212332113111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311233211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4637968039 + ... + 4637968062.

Almost surely, 2^111311233212 is an apocalyptic number.

111311233212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111311233212 is an abundant number, since it is smaller than the sum of its proper divisors (148414977644).

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

111311233212 is a wasteful number, since it uses less digits than its factorization.

111311233212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275936108 (or 9275936106 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 111311233212 its reverse (212332113111), we get a palindrome (323643346323).

The spelling of 111311233212 in words is "one hundred eleven billion, three hundred eleven million, two hundred thirty-three thousand, two hundred twelve".