I tried to find a lisp function to convert between numbers and strings and after a little googling I fond a function with the same name. when I entered (itoa 1) SLI
(itoa 1)
A heavyweight solution is to use FORMAT:
[2]> (format nil "~A" 1) "1"
There is also WRITE-TO-STRING:
[3]> (write-to-string 10) "10"