12213909529 has 2 divisors, whose sum is σ = 12213909530. Its totient is φ = 12213909528.

The previous prime is 12213909527. The next prime is 12213909551. The reversal of 12213909529 is 92590931221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12095600400 + 118309129 = 109980^2 + 10877^2 .

It is an emirp because it is prime and its reverse (92590931221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12213909529 - 2¹ = 12213909527 is a prime.

Together with 12213909527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12213909523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106954764 + 6106954765.

It is an arithmetic number, because the mean of its divisors is an integer number (6106954765).

Almost surely, 2^12213909529 is an apocalyptic number.

It is an amenable number.

12213909529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213909529 is an equidigital number, since it uses as much as digits as its factorization.

12213909529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 12213909529 in words is "twelve billion, two hundred thirteen million, nine hundred nine thousand, five hundred twenty-nine".