12112210320 has 320 divisors, whose sum is σ = 47414108160. Its totient is φ = 2492227584.

The previous prime is 12112210301. The next prime is 12112210367. The reversal of 12112210320 is 2301221121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12112210320.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 647661 + ... + 666099.

It is an arithmetic number, because the mean of its divisors is an integer number (148169088).

Almost surely, 2^12112210320 is an apocalyptic number.

12112210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12112210320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23707054080).

12112210320 is an abundant number, since it is smaller than the sum of its proper divisors (35301897840).

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

12112210320 is a wasteful number, since it uses less digits than its factorization.

12112210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18502 (or 18496 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12112210320 its reverse (2301221121), we get a palindrome (14413431441).

The spelling of 12112210320 in words is "twelve billion, one hundred twelve million, two hundred ten thousand, three hundred twenty".