12321224066464 has 24 divisors (see below), whose sum is σ = 24296981550660. Its totient is φ = 6150562085376.

The previous prime is 12321224066429. The next prime is 12321224066483. The reversal of 12321224066464 is 46466042212321.

It can be written as a sum of positive squares in 2 ways, for example, as 6811369219600 + 5509854846864 = 2609860^2 + 2347308^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12321224066464.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314040949 + ... + 314080180.

Almost surely, 2^{12321224066464} is an apocalyptic number.

It is an amenable number.

12321224066464 is a deficient number, since it is larger than the sum of its proper divisors (11975757484196).

12321224066464 is an equidigital number, since it uses as much as digits as its factorization.

12321224066464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628121752 (or 628121744 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 43.

Adding to 12321224066464 its reverse (46466042212321), we get a palindrome (58787266278785).

The spelling of 12321224066464 in words is "twelve trillion, three hundred twenty-one billion, two hundred twenty-four million, sixty-six thousand, four hundred sixty-four".