111100110001001 has 12 divisors (see below), whose sum is σ = 128545581822000. Its totient is φ = 95684305262040.

The previous prime is 111100110000977. The next prime is 111100110001031. The reversal of 111100110001001 is 100100011001111.

It is a de Polignac number, because none of the positive numbers 2^k-111100110001001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111100110001001.

It is not an unprimeable number, because it can be changed into a prime (111100110001031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24162701051 + ... + 24162705648.

It is an arithmetic number, because the mean of its divisors is an integer number (10712131818500).

Almost surely, 2^{111100110001001} is an apocalyptic number.

111100110001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111100110001001 is a deficient number, since it is larger than the sum of its proper divisors (17445471820999).

111100110001001 is a wasteful number, since it uses less digits than its factorization.

111100110001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48325406740 (or 48325406729 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 8.

Adding to 111100110001001 its reverse (100100011001111), we get a palindrome (211200121002112).

The spelling of 111100110001001 in words is "one hundred eleven trillion, one hundred billion, one hundred ten million, one thousand, one".