12100321320 has 64 divisors (see below), whose sum is σ = 36309150720. Its totient is φ = 3226024704.

The previous prime is 12100321309. The next prime is 12100321333. The reversal of 12100321320 is 2312300121.

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 12100321320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716089 + ... + 732791.

It is an arithmetic number, because the mean of its divisors is an integer number (567330480).

Almost surely, 2^12100321320 is an apocalyptic number.

12100321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100321320 is an abundant number, since it is smaller than the sum of its proper divisors (24208829400).

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

12100321320 is a wasteful number, since it uses less digits than its factorization.

12100321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22754 (or 22750 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12100321320 its reverse (2312300121), we get a palindrome (14412621441).

The spelling of 12100321320 in words is "twelve billion, one hundred million, three hundred twenty-one thousand, three hundred twenty".