13221113111 has 8 divisors (see below), whose sum is σ = 13243900320. Its totient is φ = 13198347648.

The previous prime is 13221113107. The next prime is 13221113123. The reversal of 13221113111 is 11131112231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13221113111 - 2² = 13221113107 is a prime.

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 13221113111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221113141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583195 + ... + 1591523.

It is an arithmetic number, because the mean of its divisors is an integer number (1655487540).

Almost surely, 2^13221113111 is an apocalyptic number.

13221113111 is a deficient number, since it is larger than the sum of its proper divisors (22787209).

13221113111 is a wasteful number, since it uses less digits than its factorization.

13221113111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10873.

The product of its digits is 36, while the sum is 17.

Adding to 13221113111 its reverse (11131112231), we get a palindrome (24352225342).

The spelling of 13221113111 in words is "thirteen billion, two hundred twenty-one million, one hundred thirteen thousand, one hundred eleven".