13220112111 has 4 divisors (see below), whose sum is σ = 17626816152. Its totient is φ = 8813408072.

The previous prime is 13220112083. The next prime is 13220112127. The reversal of 13220112111 is 11121102231.

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 13220112111 - 2¹⁰ = 13220111087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220112911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203352016 + ... + 2203352021.

It is an arithmetic number, because the mean of its divisors is an integer number (4406704038).

Almost surely, 2^13220112111 is an apocalyptic number.

13220112111 is a deficient number, since it is larger than the sum of its proper divisors (4406704041).

13220112111 is an equidigital number, since it uses as much as digits as its factorization.

13220112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406704040.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 13220112111 its reverse (11121102231), we get a palindrome (24341214342).

The spelling of 13220112111 in words is "thirteen billion, two hundred twenty million, one hundred twelve thousand, one hundred eleven".