11133120209 has 2 divisors, whose sum is σ = 11133120210. Its totient is φ = 11133120208.

The previous prime is 11133120203. The next prime is 11133120221. The reversal of 11133120209 is 90202133111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7687782400 + 3445337809 = 87680^2 + 58697^2 .

It is an emirp because it is prime and its reverse (90202133111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11133120209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11133120203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566560104 + 5566560105.

It is an arithmetic number, because the mean of its divisors is an integer number (5566560105).

Almost surely, 2^11133120209 is an apocalyptic number.

It is an amenable number.

11133120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11133120209 is an equidigital number, since it uses as much as digits as its factorization.

11133120209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 11133120209 in words is "eleven billion, one hundred thirty-three million, one hundred twenty thousand, two hundred nine".