12213012202217 has 2 divisors, whose sum is σ = 12213012202218. Its totient is φ = 12213012202216.

The previous prime is 12213012202189. The next prime is 12213012202337. The reversal of 12213012202217 is 71220221031221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12046563705856 + 166448496361 = 3470816^2 + 407981^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213012202217 - 2⁸ = 12213012201961 is a prime.

It is not a weakly prime, because it can be changed into another prime (12213012202117) 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, 6106506101108 + 6106506101109.

It is an arithmetic number, because the mean of its divisors is an integer number (6106506101109).

Almost surely, 2^{12213012202217} is an apocalyptic number.

It is an amenable number.

12213012202217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213012202217 is an equidigital number, since it uses as much as digits as its factorization.

12213012202217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 12213012202217 its reverse (71220221031221), we get a palindrome (83433233233438).

The spelling of 12213012202217 in words is "twelve trillion, two hundred thirteen billion, twelve million, two hundred two thousand, two hundred seventeen".