13321131021205 has 16 divisors (see below), whose sum is σ = 18287872162560. Its totient is φ = 9125043604992.

The previous prime is 13321131021173. The next prime is 13321131021223. The reversal of 13321131021205 is 50212013112331.

It is not a de Polignac number, because 13321131021205 - 2⁵ = 13321131021173 is a prime.

It is a super-2 number, since 2×13321131021205² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13321131021205.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 196762300 + ... + 196829989.

It is an arithmetic number, because the mean of its divisors is an integer number (1142992010160).

Almost surely, 2^{13321131021205} is an apocalyptic number.

It is an amenable number.

13321131021205 is a deficient number, since it is larger than the sum of its proper divisors (4966741141355).

13321131021205 is an equidigital number, since it uses as much as digits as its factorization.

13321131021205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393593268.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 13321131021205 its reverse (50212013112331), we get a palindrome (63533144133536).

The spelling of 13321131021205 in words is "thirteen trillion, three hundred twenty-one billion, one hundred thirty-one million, twenty-one thousand, two hundred five".