12235403209 has 2 divisors, whose sum is σ = 12235403210. Its totient is φ = 12235403208.

The previous prime is 12235403203. The next prime is 12235403231. The reversal of 12235403209 is 90230453221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7395140025 + 4840263184 = 85995^2 + 69572^2 .

It is an emirp because it is prime and its reverse (90230453221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12235403209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12235403203) 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 as a sum of consecutive naturals, namely, 6117701604 + 6117701605.

It is an arithmetic number, because the mean of its divisors is an integer number (6117701605).

Almost surely, 2^12235403209 is an apocalyptic number.

It is an amenable number.

12235403209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12235403209 is an equidigital number, since it uses as much as digits as its factorization.

12235403209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 12235403209 in words is "twelve billion, two hundred thirty-five million, four hundred three thousand, two hundred nine".