12112011500 has 24 divisors (see below), whose sum is σ = 26452634208. Its totient is φ = 4844804400.

The previous prime is 12112011487. The next prime is 12112011511. The reversal of 12112011500 is 511021121.

It is a super-2 number, since 2×12112011500² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12111512 + ... + 12112511.

It is an arithmetic number, because the mean of its divisors is an integer number (1102193092).

Almost surely, 2^12112011500 is an apocalyptic number.

12112011500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112011500 is an abundant number, since it is smaller than the sum of its proper divisors (14340622708).

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

12112011500 is a wasteful number, since it uses less digits than its factorization.

12112011500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24224042 (or 24224030 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 14.

Adding to 12112011500 its reverse (511021121), we get a palindrome (12623032621).

The spelling of 12112011500 in words is "twelve billion, one hundred twelve million, eleven thousand, five hundred".