11109118812 has 24 divisors (see below), whose sum is σ = 28277757312. Its totient is φ = 3366399600.

The previous prime is 11109118777. The next prime is 11109118819. The reversal of 11109118812 is 21881190111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109118819) 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, 42079864 + ... + 42080127.

It is an arithmetic number, because the mean of its divisors is an integer number (1178239888).

Almost surely, 2^11109118812 is an apocalyptic number.

11109118812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11109118812 is an abundant number, since it is smaller than the sum of its proper divisors (17168638500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11109118812 is a wasteful number, since it uses less digits than its factorization.

11109118812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84160009 (or 84160007 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 33.

It can be divided in two parts, 11109 and 118812, that added together give a palindrome (129921).

The spelling of 11109118812 in words is "eleven billion, one hundred nine million, one hundred eighteen thousand, eight hundred twelve".