12112321320 has 96 divisors (see below), whose sum is σ = 42943698720. Its totient is φ = 2936319360.

The previous prime is 12112321301. The next prime is 12112321327. The reversal of 12112321320 is 2312321121.

12112321320 is a `hidden beast` number, since 1 + 21 + 1 + 2 + 321 + 320 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12112321293 and 12112321302.

It is not an unprimeable number, because it can be changed into a prime (12112321327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1525374 + ... + 1533293.

It is an arithmetic number, because the mean of its divisors is an integer number (447330195).

Almost surely, 2^12112321320 is an apocalyptic number.

12112321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112321320 is an abundant number, since it is smaller than the sum of its proper divisors (30831377400).

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

12112321320 is a wasteful number, since it uses less digits than its factorization.

12112321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058695 (or 3058688 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12112321320 its reverse (2312321121), we get a palindrome (14424642441).

The spelling of 12112321320 in words is "twelve billion, one hundred twelve million, three hundred twenty-one thousand, three hundred twenty".