111110111111012 has 24 divisors (see below), whose sum is σ = 209441680128576. Its totient is φ = 51271339455648.

The previous prime is 111110111110961. The next prime is 111110111111023. The reversal of 111110111111012 is 210111111011111.

It is a super-2 number, since 2×111110111111012² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213285008 + ... + 213805319.

It is an arithmetic number, because the mean of its divisors is an integer number (8726736672024).

Almost surely, 2^{111110111111012} is an apocalyptic number.

It is an amenable number.

111110111111012 is a deficient number, since it is larger than the sum of its proper divisors (98331569017564).

111110111111012 is a wasteful number, since it uses less digits than its factorization.

111110111111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427095347 (or 427095345 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 14.

Adding to 111110111111012 its reverse (210111111011111), we get a palindrome (321221222122123).

Subtracting 111110111111012 from its reverse (210111111011111), we obtain a palindrome (99000999900099).

The spelling of 111110111111012 in words is "one hundred eleven trillion, one hundred ten billion, one hundred eleven million, one hundred eleven thousand, twelve".