11001000999999 has 16 divisors (see below), whose sum is σ = 14720112456192. Its totient is φ = 7307946094848.

The previous prime is 11001000999997. The next prime is 11001001000007. The reversal of 11001000999999 is 99999900010011.

11001000999999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11001000999999 - 2¹ = 11001000999997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001000999991) 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, 64016239 + ... + 64187855.

It is an arithmetic number, because the mean of its divisors is an integer number (920007028512).

Almost surely, 2^{11001000999999} is an apocalyptic number.

11001000999999 is a deficient number, since it is larger than the sum of its proper divisors (3719111456193).

11001000999999 is a wasteful number, since it uses less digits than its factorization.

11001000999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247406.

The product of its (nonzero) digits is 531441, while the sum is 57.

The spelling of 11001000999999 in words is "eleven trillion, one billion, nine hundred ninety-nine thousand, nine hundred ninety-nine".