13311322223221 has 16 divisors (see below), whose sum is σ = 14585970631680. Its totient is φ = 12047506078320.

The previous prime is 13311322223207. The next prime is 13311322223279. The reversal of 13311322223221 is 12232222311331.

It is a cyclic number.

It is not a de Polignac number, because 13311322223221 - 2³¹ = 13309174739573 is a prime.

It is a super-2 number, since 2×13311322223221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13311322223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13311322223021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1495270 + ... + 5372008.

It is an arithmetic number, because the mean of its divisors is an integer number (911623164480).

Almost surely, 2^{13311322223221} is an apocalyptic number.

13311322223221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13311322223221 is a deficient number, since it is larger than the sum of its proper divisors (1274648408459).

13311322223221 is a wasteful number, since it uses less digits than its factorization.

13311322223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878136.

The product of its digits is 5184, while the sum is 28.

Adding to 13311322223221 its reverse (12232222311331), we get a palindrome (25543544534552).

The spelling of 13311322223221 in words is "thirteen trillion, three hundred eleven billion, three hundred twenty-two million, two hundred twenty-three thousand, two hundred twenty-one".