111100111111000 has 128 divisors (see below), whose sum is σ = 298535035968000. Its totient is φ = 38273722416000.

The previous prime is 111100111110949. The next prime is 111100111111001. The reversal of 111100111111000 is 111111001111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100111111001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265580740 + ... + 265998739.

It is an arithmetic number, because the mean of its divisors is an integer number (2332304968500).

Almost surely, 2^{111100111111000} is an apocalyptic number.

111100111111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100111111000 is an abundant number, since it is smaller than the sum of its proper divisors (187434924857000).

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

111100111111000 is a wasteful number, since it uses less digits than its factorization.

111100111111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531579530 (or 531579516 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111100111111000 its reverse (111111001111), we get a palindrome (111211222112111).

The spelling of 111100111111000 in words is "one hundred eleven trillion, one hundred billion, one hundred eleven million, one hundred eleven thousand".