12113112312 has 96 divisors (see below), whose sum is σ = 38785874400. Its totient is φ = 3341544192.

The previous prime is 12113112301. The next prime is 12113112373. The reversal of 12113112312 is 21321131121.

12113112312 is a `hidden beast` number, since 121 + 1 + 311 + 231 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399763 + ... + 428994.

It is an arithmetic number, because the mean of its divisors is an integer number (404019525).

Almost surely, 2^12113112312 is an apocalyptic number.

12113112312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12113112312 is an abundant number, since it is smaller than the sum of its proper divisors (26672762088).

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

12113112312 is a wasteful number, since it uses less digits than its factorization.

12113112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828805 (or 828798 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 12113112312 its reverse (21321131121), we get a palindrome (33434243433).

The spelling of 12113112312 in words is "twelve billion, one hundred thirteen million, one hundred twelve thousand, three hundred twelve".