12120131328 has 36 divisors (see below), whose sum is σ = 32257226568. Its totient is φ = 4040043520.

The previous prime is 12120131321. The next prime is 12120131333. The reversal of 12120131328 is 82313102121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12120131298 and 12120131307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120131321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7889943 + ... + 7891478.

Almost surely, 2^12120131328 is an apocalyptic number.

It is an amenable number.

12120131328 is an abundant number, since it is smaller than the sum of its proper divisors (20137095240).

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

12120131328 is an equidigital number, since it uses as much as digits as its factorization.

12120131328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15781440 (or 15781426 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 12120131328 its reverse (82313102121), we get a palindrome (94433233449).

The spelling of 12120131328 in words is "twelve billion, one hundred twenty million, one hundred thirty-one thousand, three hundred twenty-eight".