111011111111012 has 24 divisors (see below), whose sum is σ = 222315514499904. Its totient is φ = 47513342130912.

The previous prime is 111011111110997. The next prime is 111011111111027. The reversal of 111011111111012 is 210111111110111.

It is an interprime number because it is at equal distance from previous prime (111011111110997) and next prime (111011111111027).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2618659478 + ... + 2618701869.

It is an arithmetic number, because the mean of its divisors is an integer number (9263146437496).

Almost surely, 2^{111011111111012} is an apocalyptic number.

It is an amenable number.

111011111111012 is an abundant number, since it is smaller than the sum of its proper divisors (111304403388892).

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

111011111111012 is a wasteful number, since it uses less digits than its factorization.

111011111111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5237362115 (or 5237362113 counting only the distinct ones).

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

Adding to 111011111111012 its reverse (210111111110111), we get a palindrome (321122222221123).

Subtracting 111011111111012 from its reverse (210111111110111), we obtain a palindrome (99099999999099).

The spelling of 111011111111012 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, one hundred eleven thousand, twelve".