12321313320 has 64 divisors (see below), whose sum is σ = 38156336640. Its totient is φ = 3179692800.

The previous prime is 12321313307. The next prime is 12321313357. The reversal of 12321313320 is 2331312321.

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, 1652371 + ... + 1659810.

It is an arithmetic number, because the mean of its divisors is an integer number (596192760).

Almost surely, 2^12321313320 is an apocalyptic number.

12321313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321313320 is an abundant number, since it is smaller than the sum of its proper divisors (25835023320).

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

12321313320 is a wasteful number, since it uses less digits than its factorization.

12321313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312226 (or 3312222 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12321313320 its reverse (2331312321), we get a palindrome (14652625641).

Subtracting from 12321313320 its reverse (2331312321), we obtain a palindrome (9990000999).

The spelling of 12321313320 in words is "twelve billion, three hundred twenty-one million, three hundred thirteen thousand, three hundred twenty".