13321023310321 has 4 divisors (see below), whose sum is σ = 13331688662500. Its totient is φ = 13310357958144.

The previous prime is 13321023310307. The next prime is 13321023310409. The reversal of 13321023310321 is 12301332012331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6306682938721 + 7014340371600 = 2511311^2 + 2648460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321023310321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321027310321) 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, 5332674216 + ... + 5332676713.

It is an arithmetic number, because the mean of its divisors is an integer number (3332922165625).

Almost surely, 2^{13321023310321} is an apocalyptic number.

It is an amenable number.

13321023310321 is a deficient number, since it is larger than the sum of its proper divisors (10665352179).

13321023310321 is a wasteful number, since it uses less digits than its factorization.

13321023310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665352178.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 13321023310321 its reverse (12301332012331), we get a palindrome (25622355322652).

The spelling of 13321023310321 in words is "thirteen trillion, three hundred twenty-one billion, twenty-three million, three hundred ten thousand, three hundred twenty-one".