111100111010001 has 48 divisors (see below), whose sum is σ = 165261557058624. Its totient is φ = 71869906323072.

The previous prime is 111100111009969. The next prime is 111100111010051. The reversal of 111100111010001 is 100010111001111.

It is not a de Polignac number, because 111100111010001 - 2⁵ = 111100111009969 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (111100111010051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 329831670 + ... + 330168336.

It is an arithmetic number, because the mean of its divisors is an integer number (3442949105388).

Almost surely, 2^{111100111010001} is an apocalyptic number.

It is an amenable number.

111100111010001 is a deficient number, since it is larger than the sum of its proper divisors (54161446048623).

111100111010001 is a wasteful number, since it uses less digits than its factorization.

111100111010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339390 (or 339387 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111100111010001 its reverse (100010111001111), we get a palindrome (211110222011112).

The spelling of 111100111010001 in words is "one hundred eleven trillion, one hundred billion, one hundred eleven million, ten thousand, one".