111001111101100 has 72 divisors (see below), whose sum is σ = 262775444295168. Its totient is φ = 40363189204800.

The previous prime is 111001111101053. The next prime is 111001111101107. The reversal of 111001111101100 is 1101111100111.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (111001111101107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52339969 + ... + 54419431.

It is an arithmetic number, because the mean of its divisors is an integer number (3649658948544).

Almost surely, 2^{111001111101100} is an apocalyptic number.

111001111101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001111101100 is an abundant number, since it is smaller than the sum of its proper divisors (151774333194068).

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

111001111101100 is a wasteful number, since it uses less digits than its factorization.

111001111101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128015 (or 2128008 counting only the distinct ones).

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

Adding to 111001111101100 its reverse (1101111100111), we get a palindrome (112102222201211).

The spelling of 111001111101100 in words is "one hundred eleven trillion, one billion, one hundred eleven million, one hundred one thousand, one hundred".