12112100320 has 48 divisors (see below), whose sum is σ = 28645602048. Its totient is φ = 4839631360.

The previous prime is 12112100291. The next prime is 12112100323. The reversal of 12112100320 is 2300121121.

It is a self number, because there is not a number n which added to its sum of digits gives 12112100320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112100323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110337 + ... + 190783.

It is an arithmetic number, because the mean of its divisors is an integer number (596783376).

Almost surely, 2^12112100320 is an apocalyptic number.

12112100320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112100320 is an abundant number, since it is smaller than the sum of its proper divisors (16533501728).

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

12112100320 is an equidigital number, since it uses as much as digits as its factorization.

12112100320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81403 (or 81395 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12112100320 its reverse (2300121121), we get a palindrome (14412221441).

The spelling of 12112100320 in words is "twelve billion, one hundred twelve million, one hundred thousand, three hundred twenty".