12321233520056 has 16 divisors (see below), whose sum is σ = 23538205546200. Its totient is φ = 6044378707744.

The previous prime is 12321233519981. The next prime is 12321233520059. The reversal of 12321233520056 is 65002533212321.

It is a junction number, because it is equal to n+sod(n) for n = 12321233519998 and 12321233520025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321233520059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14529756086 + ... + 14529756933.

Almost surely, 2^{12321233520056} is an apocalyptic number.

It is an amenable number.

12321233520056 is a deficient number, since it is larger than the sum of its proper divisors (11216972026144).

12321233520056 is a wasteful number, since it uses less digits than its factorization.

12321233520056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29059513078 (or 29059513074 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 12321233520056 its reverse (65002533212321), we get a palindrome (77323766732377).

The spelling of 12321233520056 in words is "twelve trillion, three hundred twenty-one billion, two hundred thirty-three million, five hundred twenty thousand, fifty-six".