12321013203212 has 24 divisors (see below), whose sum is σ = 24642174224640. Its totient is φ = 5280402554640.

The previous prime is 12321013203211. The next prime is 12321013203287. The reversal of 12321013203212 is 21230231012321.

It is not an unprimeable number, because it can be changed into a prime (12321013203211) 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, 3776537 + ... + 6237327.

It is an arithmetic number, because the mean of its divisors is an integer number (1026757259360).

Almost surely, 2^{12321013203212} is an apocalyptic number.

It is an amenable number.

12321013203212 is an abundant number, since it is smaller than the sum of its proper divisors (12321161021428).

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

12321013203212 is a wasteful number, since it uses less digits than its factorization.

12321013203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639621 (or 2639619 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12321013203212 its reverse (21230231012321), we get a palindrome (33551244215533).

The spelling of 12321013203212 in words is "twelve trillion, three hundred twenty-one billion, thirteen million, two hundred three thousand, two hundred twelve".