12001223012879 has 2 divisors, whose sum is σ = 12001223012880. Its totient is φ = 12001223012878.

The previous prime is 12001223012837. The next prime is 12001223012881. The reversal of 12001223012879 is 97821032210021.

It is a strong prime.

It is an emirp because it is prime and its reverse (97821032210021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12001223012879 - 2¹² = 12001223008783 is a prime.

It is a Sophie Germain prime.

Together with 12001223012881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001223012819) 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, 6000611506439 + 6000611506440.

It is an arithmetic number, because the mean of its divisors is an integer number (6000611506440).

Almost surely, 2^{12001223012879} is an apocalyptic number.

12001223012879 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001223012879 is an equidigital number, since it uses as much as digits as its factorization.

12001223012879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 12001223012879 in words is "twelve trillion, one billion, two hundred twenty-three million, twelve thousand, eight hundred seventy-nine".