111100101009999 has 16 divisors (see below), whose sum is σ = 154425946865664. Its totient is φ = 70967806452000.

The previous prime is 111100101009881. The next prime is 111100101010097. The reversal of 111100101009999 is 999900101001111.

It is not a de Polignac number, because 111100101009999 - 2¹³ = 111100101001807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111100101009999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100101002999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5913974479 + ... + 5913993264.

It is an arithmetic number, because the mean of its divisors is an integer number (9651621679104).

Almost surely, 2^{111100101009999} is an apocalyptic number.

111100101009999 is a deficient number, since it is larger than the sum of its proper divisors (43325845855665).

111100101009999 is a wasteful number, since it uses less digits than its factorization.

111100101009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11827967878.

The product of its (nonzero) digits is 6561, while the sum is 42.

The spelling of 111100101009999 in words is "one hundred eleven trillion, one hundred billion, one hundred one million, nine thousand, nine hundred ninety-nine".