11123340209 has 2 divisors, whose sum is σ = 11123340210. Its totient is φ = 11123340208.

The previous prime is 11123340199. The next prime is 11123340281. The reversal of 11123340209 is 90204332111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8000765809 + 3122574400 = 89447^2 + 55880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123340209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11123346209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561670104 + 5561670105.

It is an arithmetic number, because the mean of its divisors is an integer number (5561670105).

Almost surely, 2^11123340209 is an apocalyptic number.

It is an amenable number.

11123340209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123340209 is an equidigital number, since it uses as much as digits as its factorization.

11123340209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 11123340209 in words is "eleven billion, one hundred twenty-three million, three hundred forty thousand, two hundred nine".