13020221311 has 4 divisors (see below), whose sum is σ = 13233667624. Its totient is φ = 12806775000.

The previous prime is 13020221251. The next prime is 13020221339. The reversal of 13020221311 is 11312202031.

13020221311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13020221311 - 2¹⁵ = 13020188543 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 (13020221351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106723065 + ... + 106723186.

It is an arithmetic number, because the mean of its divisors is an integer number (3308416906).

Almost surely, 2^13020221311 is an apocalyptic number.

13020221311 is a deficient number, since it is larger than the sum of its proper divisors (213446313).

13020221311 is an equidigital number, since it uses as much as digits as its factorization.

13020221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213446312.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13020221311 its reverse (11312202031), we get a palindrome (24332423342).

The spelling of 13020221311 in words is "thirteen billion, twenty million, two hundred twenty-one thousand, three hundred eleven".