12322120312 has 32 divisors (see below), whose sum is σ = 25104499200. Its totient is φ = 5648508000.

The previous prime is 12322120289. The next prime is 12322120339. The reversal of 12322120312 is 21302122321.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12322120312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302814 + ... + 1312237.

It is an arithmetic number, because the mean of its divisors is an integer number (784515600).

Almost surely, 2^12322120312 is an apocalyptic number.

It is an amenable number.

12322120312 is an abundant number, since it is smaller than the sum of its proper divisors (12782378888).

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

12322120312 is a wasteful number, since it uses less digits than its factorization.

12322120312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615107 (or 2615103 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12322120312 its reverse (21302122321), we get a palindrome (33624242633).

The spelling of 12322120312 in words is "twelve billion, three hundred twenty-two million, one hundred twenty thousand, three hundred twelve".