11100111009999 has 16 divisors (see below), whose sum is σ = 16261771532160. Its totient is φ = 6678941873760.

The previous prime is 11100111009997. The next prime is 11100111010063. The reversal of 11100111009999 is 99990011100111.

It is not a de Polignac number, because 11100111009999 - 2¹ = 11100111009997 is a prime.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 11100111009999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100111009991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209948652 + ... + 1209957825.

It is an arithmetic number, because the mean of its divisors is an integer number (1016360720760).

Almost surely, 2^{11100111009999} is an apocalyptic number.

11100111009999 is a deficient number, since it is larger than the sum of its proper divisors (5161660522161).

11100111009999 is a wasteful number, since it uses less digits than its factorization.

11100111009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419906630.

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

The spelling of 11100111009999 in words is "eleven trillion, one hundred billion, one hundred eleven million, nine thousand, nine hundred ninety-nine".