22213222217 has 2 divisors, whose sum is σ = 22213222218. Its totient is φ = 22213222216.

The previous prime is 22213222201. The next prime is 22213222243. The reversal of 22213222217 is 71222231222.

It is an a-pointer prime, because the next prime (22213222243) can be obtained adding 22213222217 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21330894601 + 882327616 = 146051^2 + 29704^2 .

It is a cyclic number.

It is not a de Polignac number, because 22213222217 - 2⁴ = 22213222201 is a prime.

It is not a weakly prime, because it can be changed into another prime (22213222247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106611108 + 11106611109.

It is an arithmetic number, because the mean of its divisors is an integer number (11106611109).

Almost surely, 2^22213222217 is an apocalyptic number.

It is an amenable number.

22213222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22213222217 is an equidigital number, since it uses as much as digits as its factorization.

22213222217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 26.

Adding to 22213222217 its reverse (71222231222), we get a palindrome (93435453439).

The spelling of 22213222217 in words is "twenty-two billion, two hundred thirteen million, two hundred twenty-two thousand, two hundred seventeen".