12321111204 has 120 divisors (see below), whose sum is σ = 32771094048. Its totient is φ = 4036106880.

The previous prime is 12321111193. The next prime is 12321111211. The reversal of 12321111204 is 40211112321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4540152 + ... + 4542864.

Almost surely, 2^12321111204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321111204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16385547024).

12321111204 is an abundant number, since it is smaller than the sum of its proper divisors (20449982844).

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

12321111204 is a wasteful number, since it uses less digits than its factorization.

12321111204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12321111204 its reverse (40211112321), we get a palindrome (52532223525).

The spelling of 12321111204 in words is "twelve billion, three hundred twenty-one million, one hundred eleven thousand, two hundred four".