13021205163311 has 4 divisors (see below), whose sum is σ = 13023581734800. Its totient is φ = 13018828591824.

The previous prime is 13021205163233. The next prime is 13021205163319. The reversal of 13021205163311 is 11336150212031.

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

It is a cyclic number.

It is not a de Polignac number, because 13021205163311 - 2³⁸ = 12746327256367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021205163319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188277526 + ... + 1188288483.

It is an arithmetic number, because the mean of its divisors is an integer number (3255895433700).

Almost surely, 2^{13021205163311} is an apocalyptic number.

13021205163311 is a deficient number, since it is larger than the sum of its proper divisors (2376571489).

13021205163311 is an equidigital number, since it uses as much as digits as its factorization.

13021205163311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376571488.

The product of its (nonzero) digits is 3240, while the sum is 29.

Adding to 13021205163311 its reverse (11336150212031), we get a palindrome (24357355375342).

The spelling of 13021205163311 in words is "thirteen trillion, twenty-one billion, two hundred five million, one hundred sixty-three thousand, three hundred eleven".