12212032009 has 2 divisors, whose sum is σ = 12212032010. Its totient is φ = 12212032008.

The previous prime is 12212031971. The next prime is 12212032031. The reversal of 12212032009 is 90023021221.

12212032009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12212032031) can be obtained adding 12212032009 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11996382784 + 215649225 = 109528^2 + 14685^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212032009 - 2⁹ = 12212031497 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212032039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106016004 + 6106016005.

It is an arithmetic number, because the mean of its divisors is an integer number (6106016005).

Almost surely, 2^12212032009 is an apocalyptic number.

It is an amenable number.

12212032009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212032009 is an equidigital number, since it uses as much as digits as its factorization.

12212032009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 12212032009 in words is "twelve billion, two hundred twelve million, thirty-two thousand, nine".