100111100999 has 16 divisors (see below), whose sum is σ = 127462413120. Its totient is φ = 76477443840.

The previous prime is 100111100953. The next prime is 100111101001. The reversal of 100111100999 is 999001111001.

It is not a de Polignac number, because 100111100999 - 2²⁰ = 100110052423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111100099) 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, 18964982 + ... + 18970259.

It is an arithmetic number, because the mean of its divisors is an integer number (7966400820).

Almost surely, 2^100111100999 is an apocalyptic number.

100111100999 is a deficient number, since it is larger than the sum of its proper divisors (27351312121).

100111100999 is a wasteful number, since it uses less digits than its factorization.

100111100999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37935290.

The product of its (nonzero) digits is 729, while the sum is 32.

The spelling of 100111100999 in words is "one hundred billion, one hundred eleven million, one hundred thousand, nine hundred ninety-nine".