12000221220217 has 2 divisors, whose sum is σ = 12000221220218. Its totient is φ = 12000221220216.

The previous prime is 12000221220149. The next prime is 12000221220259. The reversal of 12000221220217 is 71202212200021.

12000221220217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11187345873001 + 812875347216 = 3344749^2 + 901596^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000221220217 - 2¹⁹ = 12000220695929 is a prime.

It is not a weakly prime, because it can be changed into another prime (12000221220517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000110610108 + 6000110610109.

It is an arithmetic number, because the mean of its divisors is an integer number (6000110610109).

Almost surely, 2^{12000221220217} is an apocalyptic number.

It is an amenable number.

12000221220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000221220217 is an equidigital number, since it uses as much as digits as its factorization.

12000221220217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 12000221220217 its reverse (71202212200021), we get a palindrome (83202433420238).

The spelling of 12000221220217 in words is "twelve trillion, two hundred twenty-one million, two hundred twenty thousand, two hundred seventeen".