12208666605 has 16 divisors (see below), whose sum is σ = 20163992064. Its totient is φ = 6301247040.

The previous prime is 12208666601. The next prime is 12208666607. The reversal of 12208666605 is 50666680221.

It is not a de Polignac number, because 12208666605 - 2² = 12208666601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208666601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13127134 + ... + 13128063.

It is an arithmetic number, because the mean of its divisors is an integer number (1260249504).

Almost surely, 2^12208666605 is an apocalyptic number.

12208666605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12208666605 is a deficient number, since it is larger than the sum of its proper divisors (7955325459).

12208666605 is a wasteful number, since it uses less digits than its factorization.

12208666605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26255236.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 12208666605 in words is "twelve billion, two hundred eight million, six hundred sixty-six thousand, six hundred five".