11231112156 has 24 divisors (see below), whose sum is σ = 28588285824. Its totient is φ = 3403367280.

The previous prime is 11231112133. The next prime is 11231112157. The reversal of 11231112156 is 65121113211.

It is a super-2 number, since 2×11231112156² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231112157) 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, 42541960 + ... + 42542223.

It is an arithmetic number, because the mean of its divisors is an integer number (1191178576).

Almost surely, 2^11231112156 is an apocalyptic number.

It is an amenable number.

11231112156 is an abundant number, since it is smaller than the sum of its proper divisors (17357173668).

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

11231112156 is a wasteful number, since it uses less digits than its factorization.

11231112156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85084201 (or 85084199 counting only the distinct ones).

The product of its digits is 360, while the sum is 24.

Adding to 11231112156 its reverse (65121113211), we get a palindrome (76352225367).

The spelling of 11231112156 in words is "eleven billion, two hundred thirty-one million, one hundred twelve thousand, one hundred fifty-six".