12402221539 has 2 divisors, whose sum is σ = 12402221540. Its totient is φ = 12402221538.

The previous prime is 12402221477. The next prime is 12402221561. The reversal of 12402221539 is 93512220421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12402221539 - 2⁷ = 12402221411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12402221539.

It is not a weakly prime, because it can be changed into another prime (12402221239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201110769 + 6201110770.

It is an arithmetic number, because the mean of its divisors is an integer number (6201110770).

Almost surely, 2^12402221539 is an apocalyptic number.

12402221539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402221539 is an equidigital number, since it uses as much as digits as its factorization.

12402221539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 12402221539 in words is "twelve billion, four hundred two million, two hundred twenty-one thousand, five hundred thirty-nine".