13323021313221 has 64 divisors (see below), whose sum is σ = 20919654604800. Its totient is φ = 8362785036672.

The previous prime is 13323021313219. The next prime is 13323021313229. The reversal of 13323021313221 is 12231312032331.

13323021313221 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 302 + 1 + 31 + 322 + 1 = 666.

It is not a de Polignac number, because 13323021313221 - 2¹ = 13323021313219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13323021313229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22510360 + ... + 23094638.

It is an arithmetic number, because the mean of its divisors is an integer number (326869603200).

Almost surely, 2^{13323021313221} is an apocalyptic number.

It is an amenable number.

13323021313221 is a deficient number, since it is larger than the sum of its proper divisors (7596633291579).

13323021313221 is a wasteful number, since it uses less digits than its factorization.

13323021313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584887 (or 584881 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 13323021313221 its reverse (12231312032331), we get a palindrome (25554333345552).

The spelling of 13323021313221 in words is "thirteen trillion, three hundred twenty-three billion, twenty-one million, three hundred thirteen thousand, two hundred twenty-one".