13321001320401 has 16 divisors (see below), whose sum is σ = 17932955399424. Its totient is φ = 8794909491984.

The previous prime is 13321001320399. The next prime is 13321001320453. The reversal of 13321001320401 is 10402310012331.

It is not a de Polignac number, because 13321001320401 - 2¹ = 13321001320399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13321001320801) 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 15 ways as a sum of consecutive naturals, for example, 5487555 + ... + 7533608.

It is an arithmetic number, because the mean of its divisors is an integer number (1120809712464).

Almost surely, 2^{13321001320401} is an apocalyptic number.

It is an amenable number.

13321001320401 is a deficient number, since it is larger than the sum of its proper divisors (4611954079023).

13321001320401 is a wasteful number, since it uses less digits than its factorization.

13321001320401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13024460.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13321001320401 its reverse (10402310012331), we get a palindrome (23723311332732).

The spelling of 13321001320401 in words is "thirteen trillion, three hundred twenty-one billion, one million, three hundred twenty thousand, four hundred one".