12321100312 has 16 divisors (see below), whose sum is σ = 23898686400. Its totient is φ = 5948117280.

The previous prime is 12321100303. The next prime is 12321100361. The reversal of 12321100312 is 21300112321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26553864 + ... + 26554327.

It is an arithmetic number, because the mean of its divisors is an integer number (1493667900).

Almost surely, 2^12321100312 is an apocalyptic number.

It is an amenable number.

12321100312 is a deficient number, since it is larger than the sum of its proper divisors (11577586088).

12321100312 is a wasteful number, since it uses less digits than its factorization.

12321100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53108226 (or 53108222 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12321100312 its reverse (21300112321), we get a palindrome (33621212633).

The spelling of 12321100312 in words is "twelve billion, three hundred twenty-one million, one hundred thousand, three hundred twelve".