111012111009999 has 64 divisors (see below), whose sum is σ = 171064967040000. Its totient is φ = 71065924739712.

The previous prime is 111012111009997. The next prime is 111012111010001. The reversal of 111012111009999 is 999900111210111.

It is an interprime number because it is at equal distance from previous prime (111012111009997) and next prime (111012111010001).

It is not a de Polignac number, because 111012111009999 - 2¹ = 111012111009997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012111009997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104319792 + ... + 105378570.

It is an arithmetic number, because the mean of its divisors is an integer number (2672890110000).

Almost surely, 2^{111012111009999} is an apocalyptic number.

111012111009999 is a deficient number, since it is larger than the sum of its proper divisors (60052856030001).

111012111009999 is a wasteful number, since it uses less digits than its factorization.

111012111009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059549 (or 1059543 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 45.

The spelling of 111012111009999 in words is "one hundred eleven trillion, twelve billion, one hundred eleven million, nine thousand, nine hundred ninety-nine".