11220012209 has 12 divisors (see below), whose sum is σ = 13217068800. Its totient is φ = 9495413928.

The previous prime is 11220012151. The next prime is 11220012227. The reversal of 11220012209 is 90221002211.

It is a happy number.

11220012209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11220012209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220062209) 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 11 ways as a sum of consecutive naturals, for example, 1445369 + ... + 1453110.

It is an arithmetic number, because the mean of its divisors is an integer number (1101422400).

Almost surely, 2^11220012209 is an apocalyptic number.

It is an amenable number.

11220012209 is a deficient number, since it is larger than the sum of its proper divisors (1997056591).

11220012209 is an equidigital number, since it uses as much as digits as its factorization.

11220012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898572 (or 2898565 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 11220012209 in words is "eleven billion, two hundred twenty million, twelve thousand, two hundred nine".