12215049239 has 2 divisors, whose sum is σ = 12215049240. Its totient is φ = 12215049238.

The previous prime is 12215049227. The next prime is 12215049241. The reversal of 12215049239 is 93294051221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12215049239 - 2²⁰ = 12214000663 is a prime.

It is a super-2 number, since 2×12215049239² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 12215049241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215045239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6107524619 + 6107524620.

It is an arithmetic number, because the mean of its divisors is an integer number (6107524620).

Almost surely, 2^12215049239 is an apocalyptic number.

12215049239 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215049239 is an equidigital number, since it uses as much as digits as its factorization.

12215049239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 12215049239 in words is "twelve billion, two hundred fifteen million, forty-nine thousand, two hundred thirty-nine".