111000111012 has 144 divisors (see below), whose sum is σ = 329412720000. Its totient is φ = 31500947520.

The previous prime is 111000111007. The next prime is 111000111143. The reversal of 111000111012 is 210111000111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111000110985 and 111000111003.

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 47 ways as a sum of consecutive naturals, for example, 1809687 + ... + 1870017.

Almost surely, 2^111000111012 is an apocalyptic number.

111000111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111000111012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164706360000).

111000111012 is an abundant number, since it is smaller than the sum of its proper divisors (218412608988).

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

111000111012 is a wasteful number, since it uses less digits than its factorization.

111000111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60511 (or 60492 counting only the distinct ones).

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

Adding to 111000111012 its reverse (210111000111), we get a palindrome (321111111123).

The spelling of 111000111012 in words is "one hundred eleven billion, one hundred eleven thousand, twelve".