111211431233 has 16 divisors (see below), whose sum is σ = 127636924800. Its totient is φ = 94921082496.

The previous prime is 111211431203. The next prime is 111211431251. The reversal of 111211431233 is 332134112111.

It is a cyclic number.

It is not a de Polignac number, because 111211431233 - 2²² = 111207236929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111211431199 and 111211431208.

It is not an unprimeable number, because it can be changed into a prime (111211431203) 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 15 ways as a sum of consecutive naturals, for example, 2229635 + ... + 2278967.

It is an arithmetic number, because the mean of its divisors is an integer number (7977307800).

Almost surely, 2^111211431233 is an apocalyptic number.

It is an amenable number.

111211431233 is a deficient number, since it is larger than the sum of its proper divisors (16425493567).

111211431233 is a wasteful number, since it uses less digits than its factorization.

111211431233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50696.

The product of its digits is 432, while the sum is 23.

Adding to 111211431233 its reverse (332134112111), we get a palindrome (443345543344).

The spelling of 111211431233 in words is "one hundred eleven billion, two hundred eleven million, four hundred thirty-one thousand, two hundred thirty-three".