12321040645312 has 84 divisors (see below), whose sum is σ = 29422066510080. Its totient is φ = 5098361608704.

The previous prime is 12321040645307. The next prime is 12321040645391. The reversal of 12321040645312 is 21354604012321.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 67648768 + ... + 67830655.

Almost surely, 2^{12321040645312} is an apocalyptic number.

It is an amenable number.

12321040645312 is an abundant number, since it is smaller than the sum of its proper divisors (17101025864768).

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

12321040645312 is a wasteful number, since it uses less digits than its factorization.

12321040645312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135479478 (or 135479461 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 12321040645312 its reverse (21354604012321), we get a palindrome (33675644657633).

The spelling of 12321040645312 in words is "twelve trillion, three hundred twenty-one billion, forty million, six hundred forty-five thousand, three hundred twelve".