12218169599 has 2 divisors, whose sum is σ = 12218169600. Its totient is φ = 12218169598.

The previous prime is 12218169581. The next prime is 12218169611. The reversal of 12218169599 is 99596181221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12218169599 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12218169599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12218169529) 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, 6109084799 + 6109084800.

It is an arithmetic number, because the mean of its divisors is an integer number (6109084800).

Almost surely, 2^12218169599 is an apocalyptic number.

12218169599 is a deficient number, since it is larger than the sum of its proper divisors (1).

12218169599 is an equidigital number, since it uses as much as digits as its factorization.

12218169599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 53.

The spelling of 12218169599 in words is "twelve billion, two hundred eighteen million, one hundred sixty-nine thousand, five hundred ninety-nine".