12321002232 has 128 divisors (see below), whose sum is σ = 42670195200. Its totient is φ = 3200256000.

The previous prime is 12321002189. The next prime is 12321002237. The reversal of 12321002232 is 23220012321.

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 (12321002237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353769 + ... + 387032.

It is an arithmetic number, because the mean of its divisors is an integer number (333360900).

Almost surely, 2^12321002232 is an apocalyptic number.

12321002232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12321002232 is an abundant number, since it is smaller than the sum of its proper divisors (30349192968).

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

12321002232 is a wasteful number, since it uses less digits than its factorization.

12321002232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740834 (or 740824 counting only the distinct ones).

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

Adding to 12321002232 its reverse (23220012321), we get a palindrome (35541014553).

The spelling of 12321002232 in words is "twelve billion, three hundred twenty-one million, two thousand, two hundred thirty-two".