111001100120100 has 108 divisors (see below), whose sum is σ = 360812958773904. Its totient is φ = 29600293358880.

The previous prime is 111001100120087. The next prime is 111001100120143. The reversal of 111001100120100 is 1021001100111.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2283948954 + ... + 2283997553.

It is an arithmetic number, because the mean of its divisors is an integer number (3340860729388).

Almost surely, 2^{111001100120100} is an apocalyptic number.

111001100120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001100120100 is an abundant number, since it is smaller than the sum of its proper divisors (249811858653804).

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

111001100120100 is a wasteful number, since it uses less digits than its factorization.

111001100120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567946536 (or 4567946517 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111001100120100 its reverse (1021001100111), we get a palindrome (112022101220211).

The spelling of 111001100120100 in words is "one hundred eleven trillion, one billion, one hundred million, one hundred twenty thousand, one hundred".