12212537009 has 2 divisors, whose sum is σ = 12212537010. Its totient is φ = 12212537008.

The previous prime is 12212536991. The next prime is 12212537041. The reversal of 12212537009 is 90073521221.

It is an a-pointer prime, because the next prime (12212537041) can be obtained adding 12212537009 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9258288400 + 2954248609 = 96220^2 + 54353^2 .

It is an emirp because it is prime and its reverse (90073521221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212537009 - 2³² = 7917569713 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212537069) 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, 6106268504 + 6106268505.

It is an arithmetic number, because the mean of its divisors is an integer number (6106268505).

Almost surely, 2^12212537009 is an apocalyptic number.

It is an amenable number.

12212537009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212537009 is an equidigital number, since it uses as much as digits as its factorization.

12212537009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 12212537009 in words is "twelve billion, two hundred twelve million, five hundred thirty-seven thousand, nine".