12022222217 has 2 divisors, whose sum is σ = 12022222218. Its totient is φ = 12022222216.

The previous prime is 12022222213. The next prime is 12022222243. The reversal of 12022222217 is 71222222021.

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., 7720961161 + 4301261056 = 87869^2 + 65584^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022222217 - 2² = 12022222213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12022222192 and 12022222201.

It is not a weakly prime, because it can be changed into another prime (12022222213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011111108 + 6011111109.

It is an arithmetic number, because the mean of its divisors is an integer number (6011111109).

Almost surely, 2^12022222217 is an apocalyptic number.

It is an amenable number.

12022222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12022222217 is an equidigital number, since it uses as much as digits as its factorization.

12022222217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

Adding to 12022222217 its reverse (71222222021), we get a palindrome (83244444238).

The spelling of 12022222217 in words is "twelve billion, twenty-two million, two hundred twenty-two thousand, two hundred seventeen".