23111111112 has 32 divisors (see below), whose sum is σ = 57782894400. Its totient is φ = 7703021504.

The previous prime is 23111111087. The next prime is 23111111113. The reversal of 23111111112 is 21111111132.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23111111091 and 23111111100.

It is not an unprimeable number, because it can be changed into a prime (23111111113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285589 + ... + 357467.

It is an arithmetic number, because the mean of its divisors is an integer number (1805715450).

Almost surely, 2^23111111112 is an apocalyptic number.

It is an amenable number.

23111111112 is an abundant number, since it is smaller than the sum of its proper divisors (34671783288).

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

23111111112 is a wasteful number, since it uses less digits than its factorization.

23111111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85285 (or 85281 counting only the distinct ones).

The product of its digits is 12, while the sum is 15.

Adding to 23111111112 its reverse (21111111132), we get a palindrome (44222222244).

The spelling of 23111111112 in words is "twenty-three billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".