12001223012281 has 2 divisors, whose sum is σ = 12001223012282. Its totient is φ = 12001223012280.

The previous prime is 12001223012237. The next prime is 12001223012377. The reversal of 12001223012281 is 18221032210021.

It is a happy number.

12001223012281 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., 8163071837881 + 3838151174400 = 2857109^2 + 1959120^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001223012281 - 2⁷ = 12001223012153 is a prime.

It is a super-2 number, since 2×12001223012281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12001223012881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000611506140 + 6000611506141.

It is an arithmetic number, because the mean of its divisors is an integer number (6000611506141).

Almost surely, 2^{12001223012281} is an apocalyptic number.

It is an amenable number.

12001223012281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001223012281 is an equidigital number, since it uses as much as digits as its factorization.

12001223012281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The spelling of 12001223012281 in words is "twelve trillion, one billion, two hundred twenty-three million, twelve thousand, two hundred eighty-one".