13111122109 has 16 divisors (see below), whose sum is σ = 14139601920. Its totient is φ = 12113038080.

The previous prime is 13111122107. The next prime is 13111122119. The reversal of 13111122109 is 90122111131.

It is a cyclic number.

It is not a de Polignac number, because 13111122109 - 2¹ = 13111122107 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 13111122109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111122107) 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, 204124 + ... + 260554.

It is an arithmetic number, because the mean of its divisors is an integer number (883725120).

Almost surely, 2^13111122109 is an apocalyptic number.

It is an amenable number.

13111122109 is a deficient number, since it is larger than the sum of its proper divisors (1028479811).

13111122109 is a wasteful number, since it uses less digits than its factorization.

13111122109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56700.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 13111122109 in words is "thirteen billion, one hundred eleven million, one hundred twenty-two thousand, one hundred nine".