11199121599 has 8 divisors (see below), whose sum is σ = 14934170880. Its totient is φ = 7465076696.

The previous prime is 11199121589. The next prime is 11199121643. The reversal of 11199121599 is 99512199111.

11199121599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11199121599 - 2¹³ = 11199113407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11199121519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224679 + ... + 269960.

It is an arithmetic number, because the mean of its divisors is an integer number (1866771360).

Almost surely, 2^11199121599 is an apocalyptic number.

11199121599 is a deficient number, since it is larger than the sum of its proper divisors (3735049281).

11199121599 is an equidigital number, since it uses as much as digits as its factorization.

11199121599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502189.

The product of its digits is 65610, while the sum is 48.

The spelling of 11199121599 in words is "eleven billion, one hundred ninety-nine million, one hundred twenty-one thousand, five hundred ninety-nine".