12206215687 has 2 divisors, whose sum is σ = 12206215688. Its totient is φ = 12206215686.

The previous prime is 12206215673. The next prime is 12206215711. The reversal of 12206215687 is 78651260221.

It is a weak prime.

It is an emirp because it is prime and its reverse (78651260221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12206215687 - 2³¹ = 10058732039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12206215387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6103107843 + 6103107844.

It is an arithmetic number, because the mean of its divisors is an integer number (6103107844).

Almost surely, 2^12206215687 is an apocalyptic number.

12206215687 is a deficient number, since it is larger than the sum of its proper divisors (1).

12206215687 is an equidigital number, since it uses as much as digits as its factorization.

12206215687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 12206215687 in words is "twelve billion, two hundred six million, two hundred fifteen thousand, six hundred eighty-seven".