22002420217 has 2 divisors, whose sum is σ = 22002420218. Its totient is φ = 22002420216.

The previous prime is 22002420163. The next prime is 22002420239. The reversal of 22002420217 is 71202420022.

It is a happy number.

It is an a-pointer prime, because the next prime (22002420239) can be obtained adding 22002420217 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16199180176 + 5803240041 = 127276^2 + 76179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22002420217 is a prime.

It is not a weakly prime, because it can be changed into another prime (22002420617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001210108 + 11001210109.

It is an arithmetic number, because the mean of its divisors is an integer number (11001210109).

Almost surely, 2^22002420217 is an apocalyptic number.

It is an amenable number.

22002420217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002420217 is an equidigital number, since it uses as much as digits as its factorization.

22002420217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

Adding to 22002420217 its reverse (71202420022), we get a palindrome (93204840239).

The spelling of 22002420217 in words is "twenty-two billion, two million, four hundred twenty thousand, two hundred seventeen".