111100011111100 has 144 divisors (see below), whose sum is σ = 283902399083520. Its totient is φ = 37310948012800.

The previous prime is 111100011111049. The next prime is 111100011111157. The reversal of 111100011111100 is 1111110001111.

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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74978452 + ... + 76445851.

It is an arithmetic number, because the mean of its divisors is an integer number (1971544438080).

Almost surely, 2^{111100011111100} is an apocalyptic number.

111100011111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100011111100 is an abundant number, since it is smaller than the sum of its proper divisors (172802387972420).

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

111100011111100 is a wasteful number, since it uses less digits than its factorization.

111100011111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151424380 (or 151424373 counting only the distinct ones).

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

Adding to 111100011111100 its reverse (1111110001111), we get a palindrome (112211121112211).

The spelling of 111100011111100 in words is "one hundred eleven trillion, one hundred billion, eleven million, one hundred eleven thousand, one hundred".