12420422519 has 2 divisors, whose sum is σ = 12420422520. Its totient is φ = 12420422518.

The previous prime is 12420422507. The next prime is 12420422563. The reversal of 12420422519 is 91522402421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12420422519 - 2²⁸ = 12151987063 is a prime.

It is a super-2 number, since 2×12420422519² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12420425519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210211259 + 6210211260.

It is an arithmetic number, because the mean of its divisors is an integer number (6210211260).

Almost surely, 2^12420422519 is an apocalyptic number.

12420422519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420422519 is an equidigital number, since it uses as much as digits as its factorization.

12420422519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 12420422519 in words is "twelve billion, four hundred twenty million, four hundred twenty-two thousand, five hundred nineteen".