12321302004 has 72 divisors (see below), whose sum is σ = 34327308288. Its totient is φ = 3695224320.

The previous prime is 12321302003. The next prime is 12321302011. The reversal of 12321302004 is 40020312321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321302003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121972 + ... + 198795.

Almost surely, 2^12321302004 is an apocalyptic number.

It is an amenable number.

12321302004 is an abundant number, since it is smaller than the sum of its proper divisors (22006006284).

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

12321302004 is a wasteful number, since it uses less digits than its factorization.

12321302004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320885 (or 320880 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12321302004 its reverse (40020312321), we get a palindrome (52341614325).

The spelling of 12321302004 in words is "twelve billion, three hundred twenty-one million, three hundred two thousand, four".