12215940829 has 2 divisors, whose sum is σ = 12215940830. Its totient is φ = 12215940828.

The previous prime is 12215940827. The next prime is 12215940833. The reversal of 12215940829 is 92804951221.

12215940829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8337516100 + 3878424729 = 91310^2 + 62277^2 .

It is a cyclic number.

It is not a de Polignac number, because 12215940829 - 2¹ = 12215940827 is a prime.

Together with 12215940827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215940827) 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, 6107970414 + 6107970415.

It is an arithmetic number, because the mean of its divisors is an integer number (6107970415).

Almost surely, 2^12215940829 is an apocalyptic number.

It is an amenable number.

12215940829 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215940829 is an equidigital number, since it uses as much as digits as its factorization.

12215940829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 12215940829 in words is "twelve billion, two hundred fifteen million, nine hundred forty thousand, eight hundred twenty-nine".