12215940229 has 2 divisors, whose sum is σ = 12215940230. Its totient is φ = 12215940228.

The previous prime is 12215940179. The next prime is 12215940263. The reversal of 12215940229 is 92204951221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6111643329 + 6104296900 = 78177^2 + 78130^2 .

It is an emirp because it is prime and its reverse (92204951221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12215940229 - 2⁷ = 12215940101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215940829) 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, 6107970114 + 6107970115.

It is an arithmetic number, because the mean of its divisors is an integer number (6107970115).

Almost surely, 2^12215940229 is an apocalyptic number.

It is an amenable number.

12215940229 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215940229 is an equidigital number, since it uses as much as digits as its factorization.

12215940229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 12215940229 in words is "twelve billion, two hundred fifteen million, nine hundred forty thousand, two hundred twenty-nine".