111111110112012 has 144 divisors (see below), whose sum is σ = 274454747642880. Its totient is φ = 34949214288000.

The previous prime is 111111110112007. The next prime is 111111110112083. The reversal of 111111110112012 is 210211011111111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111111110111982 and 111111110112000.

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, 220798887 + ... + 221301537.

It is an arithmetic number, because the mean of its divisors is an integer number (1905935747520).

Almost surely, 2^{111111110112012} is an apocalyptic number.

111111110112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111110112012 is an abundant number, since it is smaller than the sum of its proper divisors (163343637530868).

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

111111110112012 is a wasteful number, since it uses less digits than its factorization.

111111110112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503052 (or 503003 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111111110112012 its reverse (210211011111111), we get a palindrome (321322121223123).

Subtracting 111111110112012 from its reverse (210211011111111), we obtain a palindrome (99099900999099).

The spelling of 111111110112012 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, one hundred twelve thousand, twelve".