12213210022217 has 2 divisors, whose sum is σ = 12213210022218. Its totient is φ = 12213210022216.

The previous prime is 12213210022213. The next prime is 12213210022259. The reversal of 12213210022217 is 71222001231221.

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., 11828020977721 + 385189044496 = 3439189^2 + 620636^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213210022217 - 2² = 12213210022213 is a prime.

It is not a weakly prime, because it can be changed into another prime (12213210022213) 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, 6106605011108 + 6106605011109.

It is an arithmetic number, because the mean of its divisors is an integer number (6106605011109).

Almost surely, 2^{12213210022217} is an apocalyptic number.

It is an amenable number.

12213210022217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213210022217 is an equidigital number, since it uses as much as digits as its factorization.

12213210022217 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 12213210022217 its reverse (71222001231221), we get a palindrome (83435211253438).

The spelling of 12213210022217 in words is "twelve trillion, two hundred thirteen billion, two hundred ten million, twenty-two thousand, two hundred seventeen".