111111111120 has 40 divisors (see below), whose sum is σ = 344444445216. Its totient is φ = 29629629568.

The previous prime is 111111111103. The next prime is 111111111149. The reversal of 111111111120 is 21111111111.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111111111096 and 111111111105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231481242 + ... + 231481721.

Almost surely, 2^111111111120 is an apocalyptic number.

111111111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111111120 is an abundant number, since it is smaller than the sum of its proper divisors (233333334096).

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

111111111120 is a wasteful number, since it uses less digits than its factorization.

111111111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462962979 (or 462962973 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 111111111120 its reverse (21111111111), we get a palindrome (132222222231).

Subtracting from 111111111120 its reverse (21111111111), we obtain a palindrome (90000000009).

The spelling of 111111111120 in words is "one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty".