12016146209 has 2 divisors, whose sum is σ = 12016146210. Its totient is φ = 12016146208.

The previous prime is 12016146203. The next prime is 12016146271. The reversal of 12016146209 is 90264161021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10337195584 + 1678950625 = 101672^2 + 40975^2 .

It is a cyclic number.

It is not a de Polignac number, because 12016146209 - 2²⁴ = 11999368993 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 (12016146203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6008073104 + 6008073105.

It is an arithmetic number, because the mean of its divisors is an integer number (6008073105).

Almost surely, 2^12016146209 is an apocalyptic number.

It is an amenable number.

12016146209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12016146209 is an equidigital number, since it uses as much as digits as its factorization.

12016146209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 12016146209 in words is "twelve billion, sixteen million, one hundred forty-six thousand, two hundred nine".