12021018959 has 2 divisors, whose sum is σ = 12021018960. Its totient is φ = 12021018958.

The previous prime is 12021018953. The next prime is 12021018973. The reversal of 12021018959 is 95981012021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (95981012021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021018959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021018953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010509479 + 6010509480.

It is an arithmetic number, because the mean of its divisors is an integer number (6010509480).

Almost surely, 2^12021018959 is an apocalyptic number.

12021018959 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021018959 is an equidigital number, since it uses as much as digits as its factorization.

12021018959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 38.

The spelling of 12021018959 in words is "twelve billion, twenty-one million, eighteen thousand, nine hundred fifty-nine".