11199213909 has 96 divisors (see below), whose sum is σ = 19240865280. Its totient is φ = 6215325696.

The previous prime is 11199213901. The next prime is 11199213911. The reversal of 11199213909 is 90931299111.

11199213909 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 11199213909 - 2³ = 11199213901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11199213901) 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 95 ways as a sum of consecutive naturals, for example, 3864349 + ... + 3867245.

It is an arithmetic number, because the mean of its divisors is an integer number (200425680).

Almost surely, 2^11199213909 is an apocalyptic number.

11199213909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11199213909 is a deficient number, since it is larger than the sum of its proper divisors (8041651371).

11199213909 is a wasteful number, since it uses less digits than its factorization.

11199213909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 45.

The spelling of 11199213909 in words is "eleven billion, one hundred ninety-nine million, two hundred thirteen thousand, nine hundred nine".