12420324109 has 2 divisors, whose sum is σ = 12420324110. Its totient is φ = 12420324108.

The previous prime is 12420324089. The next prime is 12420324181. The reversal of 12420324109 is 90142302421.

12420324109 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., 9678230884 + 2742093225 = 98378^2 + 52365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12420324109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12420364109) 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, 6210162054 + 6210162055.

It is an arithmetic number, because the mean of its divisors is an integer number (6210162055).

Almost surely, 2^12420324109 is an apocalyptic number.

It is an amenable number.

12420324109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420324109 is an equidigital number, since it uses as much as digits as its factorization.

12420324109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 12420324109 in words is "twelve billion, four hundred twenty million, three hundred twenty-four thousand, one hundred nine".