12321205204 has 24 divisors (see below), whose sum is σ = 26882630208. Its totient is φ = 4800469440.

The previous prime is 12321205189. The next prime is 12321205289. The reversal of 12321205204 is 40250212321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 20001649 + ... + 20002264.

It is an arithmetic number, because the mean of its divisors is an integer number (1120109592).

Almost surely, 2^12321205204 is an apocalyptic number.

12321205204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12321205204 is an abundant number, since it is smaller than the sum of its proper divisors (14561425004).

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

12321205204 is a wasteful number, since it uses less digits than its factorization.

12321205204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40003935 (or 40003933 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12321205204 its reverse (40250212321), we get a palindrome (52571417525).

The spelling of 12321205204 in words is "twelve billion, three hundred twenty-one million, two hundred five thousand, two hundred four".