11111001120999 has 32 divisors (see below), whose sum is σ = 17731624155840. Its totient is φ = 6835737557376.

The previous prime is 11111001120997. The next prime is 11111001121027. The reversal of 11111001120999 is 99902110011111.

It is not a de Polignac number, because 11111001120999 - 2¹ = 11111001120997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111001120991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2835712 + ... + 5501205.

It is an arithmetic number, because the mean of its divisors is an integer number (554113254870).

Almost surely, 2^{11111001120999} is an apocalyptic number.

11111001120999 is a deficient number, since it is larger than the sum of its proper divisors (6620623034841).

11111001120999 is a wasteful number, since it uses less digits than its factorization.

11111001120999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340736 (or 8340730 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 36.

The spelling of 11111001120999 in words is "eleven trillion, one hundred eleven billion, one million, one hundred twenty thousand, nine hundred ninety-nine".