12013332320 has 48 divisors (see below), whose sum is σ = 30961638288. Its totient is φ = 4368483840.

The previous prime is 12013332313. The next prime is 12013332323. The reversal of 12013332320 is 2323331021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12013332292 and 12013332301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013332323) 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, 3411119 + ... + 3414638.

It is an arithmetic number, because the mean of its divisors is an integer number (645034131).

Almost surely, 2^12013332320 is an apocalyptic number.

12013332320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013332320 is an abundant number, since it is smaller than the sum of its proper divisors (18948305968).

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

12013332320 is a wasteful number, since it uses less digits than its factorization.

12013332320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825783 (or 6825775 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12013332320 its reverse (2323331021), we get a palindrome (14336663341).

The spelling of 12013332320 in words is "twelve billion, thirteen million, three hundred thirty-two thousand, three hundred twenty".