12806201 has 2 divisors, whose sum is σ = 12806202. Its totient is φ = 12806200.

The previous prime is 12806191. The next prime is 12806203. The reversal of 12806201 is 10260821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9916201 + 2890000 = 3149^2 + 1700^2 .

It is an emirp because it is prime and its reverse (10260821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12806201 is a prime.

It is a Sophie Germain prime.

Together with 12806203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12806203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6403100 + 6403101.

It is an arithmetic number, because the mean of its divisors is an integer number (6403101).

Almost surely, 2^12806201 is an apocalyptic number.

It is an amenable number.

12806201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12806201 is an equidigital number, since it uses as much as digits as its factorization.

12806201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 12806201 is about 3578.5752751619. The cubic root of 12806201 is about 233.9591876128.

The spelling of 12806201 in words is "twelve million, eight hundred six thousand, two hundred one".