12220420439 has 2 divisors, whose sum is σ = 12220420440. Its totient is φ = 12220420438.

The previous prime is 12220420411. The next prime is 12220420447. The reversal of 12220420439 is 93402402221.

It is a happy number.

12220420439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (93402402221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12220420439 - 2²⁴ = 12203643223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220420409) 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, 6110210219 + 6110210220.

It is an arithmetic number, because the mean of its divisors is an integer number (6110210220).

Almost surely, 2^12220420439 is an apocalyptic number.

12220420439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220420439 is an equidigital number, since it uses as much as digits as its factorization.

12220420439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 12220420439 in words is "twelve billion, two hundred twenty million, four hundred twenty thousand, four hundred thirty-nine".