What nine digit numerical palindrome when multiplied by itself, produces a seventeen digit numerical palindrome (can be read from right to left and vice versa) ?

Hint: This is a divine number.
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The number is 111111111

111111111 x 111111111 =
12345678987654321