11111100099999 has 4 divisors (see below), whose sum is σ = 14814800133336. Its totient is φ = 7407400066664.

The previous prime is 11111100099943. The next prime is 11111100100019. The reversal of 11111100099999 is 99999000111111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11111100099999 - 2⁷ = 11111100099871 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111100091999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851850016664 + ... + 1851850016669.

It is an arithmetic number, because the mean of its divisors is an integer number (3703700033334).

Almost surely, 2^{11111100099999} is an apocalyptic number.

11111100099999 is a deficient number, since it is larger than the sum of its proper divisors (3703700033337).

11111100099999 is an equidigital number, since it uses as much as digits as its factorization.

11111100099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703700033336.

The product of its (nonzero) digits is 59049, while the sum is 51.

The spelling of 11111100099999 in words is "eleven trillion, one hundred eleven billion, one hundred million, ninety-nine thousand, nine hundred ninety-nine".