12205166243 has 2 divisors, whose sum is σ = 12205166244. Its totient is φ = 12205166242.

The previous prime is 12205166231. The next prime is 12205166251. The reversal of 12205166243 is 34266150221.

It is a strong prime.

It is an emirp because it is prime and its reverse (34266150221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12205166243 - 2¹⁸ = 12204904099 is a prime.

It is not a weakly prime, because it can be changed into another prime (12205166203) 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, 6102583121 + 6102583122.

It is an arithmetic number, because the mean of its divisors is an integer number (6102583122).

Almost surely, 2^12205166243 is an apocalyptic number.

12205166243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12205166243 is an equidigital number, since it uses as much as digits as its factorization.

12205166243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 12205166243 in words is "twelve billion, two hundred five million, one hundred sixty-six thousand, two hundred forty-three".