11181223118 has 16 divisors (see below), whose sum is σ = 18066884976. Its totient is φ = 5159161920.

The previous prime is 11181223117. The next prime is 11181223133. The reversal of 11181223118 is 81132218111.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11181223111) 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, 42338 + ... + 155418.

It is an arithmetic number, because the mean of its divisors is an integer number (1129180311).

Almost surely, 2^11181223118 is an apocalyptic number.

11181223118 is a deficient number, since it is larger than the sum of its proper divisors (6885661858).

11181223118 is a wasteful number, since it uses less digits than its factorization.

11181223118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116899.

The product of its digits is 768, while the sum is 29.

The spelling of 11181223118 in words is "eleven billion, one hundred eighty-one million, two hundred twenty-three thousand, one hundred eighteen".