12222212120917 has 2 divisors, whose sum is σ = 12222212120918. Its totient is φ = 12222212120916.

The previous prime is 12222212120891. The next prime is 12222212121047. The reversal of 12222212120917 is 71902121222221.

12222212120917 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., 12019991924196 + 202220196721 = 3466986^2 + 449689^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222212120917 - 2¹¹ = 12222212118869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222212720917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111106060458 + 6111106060459.

It is an arithmetic number, because the mean of its divisors is an integer number (6111106060459).

Almost surely, 2^{12222212120917} is an apocalyptic number.

It is an amenable number.

12222212120917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222212120917 is an equidigital number, since it uses as much as digits as its factorization.

12222212120917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 12222212120917 in words is "twelve trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty thousand, nine hundred seventeen".