12112011012 has 48 divisors (see below), whose sum is σ = 29957098752. Its totient is φ = 3795617280.

The previous prime is 12112011011. The next prime is 12112011031. The reversal of 12112011012 is 21011021121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12112011011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153258 + ... + 218430.

It is an arithmetic number, because the mean of its divisors is an integer number (624106224).

Almost surely, 2^12112011012 is an apocalyptic number.

12112011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12112011012 is an abundant number, since it is smaller than the sum of its proper divisors (17845087740).

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

12112011012 is a wasteful number, since it uses less digits than its factorization.

12112011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66108 (or 66106 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12112011012 its reverse (21011021121), we get a palindrome (33123032133).

The spelling of 12112011012 in words is "twelve billion, one hundred twelve million, eleven thousand, twelve".