13221101311 has 4 divisors (see below), whose sum is σ = 14423019624. Its totient is φ = 12019183000.

The previous prime is 13221101287. The next prime is 13221101347. The reversal of 13221101311 is 11310112231.

It is a happy number.

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

It is not a de Polignac number, because 13221101311 - 2¹⁹ = 13220577023 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 (13221102311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600959140 + ... + 600959161.

It is an arithmetic number, because the mean of its divisors is an integer number (3605754906).

Almost surely, 2^13221101311 is an apocalyptic number.

13221101311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13221101311 is a deficient number, since it is larger than the sum of its proper divisors (1201918313).

13221101311 is a wasteful number, since it uses less digits than its factorization.

13221101311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201918312.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13221101311 its reverse (11310112231), we get a palindrome (24531213542).

The spelling of 13221101311 in words is "thirteen billion, two hundred twenty-one million, one hundred one thousand, three hundred eleven".