12021202217 has 2 divisors, whose sum is σ = 12021202218. Its totient is φ = 12021202216.

The previous prime is 12021202189. The next prime is 12021202247. The reversal of 12021202217 is 71220212021.

12021202217 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., 11506638361 + 514563856 = 107269^2 + 22684^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021202217 - 2⁶ = 12021202153 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021202247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010601108 + 6010601109.

It is an arithmetic number, because the mean of its divisors is an integer number (6010601109).

Almost surely, 2^12021202217 is an apocalyptic number.

It is an amenable number.

12021202217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021202217 is an equidigital number, since it uses as much as digits as its factorization.

12021202217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 12021202217 its reverse (71220212021), we get a palindrome (83241414238).

The spelling of 12021202217 in words is "twelve billion, twenty-one million, two hundred two thousand, two hundred seventeen".