1100111021118 has 16 divisors (see below), whose sum is σ = 2444691158160. Its totient is φ = 366703673688.

The previous prime is 1100111021111. The next prime is 1100111021173. The reversal of 1100111021118 is 8111201110011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1100111021118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100111021111) 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, 10186213105 + ... + 10186213212.

It is an arithmetic number, because the mean of its divisors is an integer number (152793197385).

Almost surely, 2^{1100111021118} is an apocalyptic number.

1100111021118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1100111021118 is an abundant number, since it is smaller than the sum of its proper divisors (1344580137042).

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

1100111021118 is a wasteful number, since it uses less digits than its factorization.

1100111021118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20372426328 (or 20372426322 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 1100111021118 its reverse (8111201110011), we get a palindrome (9211312131129).

The spelling of 1100111021118 in words is "one trillion, one hundred billion, one hundred eleven million, twenty-one thousand, one hundred eighteen".