11121344309 has 16 divisors (see below), whose sum is σ = 11982816000. Its totient is φ = 10288502784.

The previous prime is 11121344293. The next prime is 11121344329. The reversal of 11121344309 is 90344312111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11121344309 - 2⁴ = 11121344293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121344329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387089 + ... + 414825.

It is an arithmetic number, because the mean of its divisors is an integer number (748926000).

Almost surely, 2^11121344309 is an apocalyptic number.

11121344309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11121344309 is a deficient number, since it is larger than the sum of its proper divisors (861471691).

11121344309 is a wasteful number, since it uses less digits than its factorization.

11121344309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28252.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 11121344309 in words is "eleven billion, one hundred twenty-one million, three hundred forty-four thousand, three hundred nine".