Papaya plants are like walnut trees, they have a Gender, so it might be necessary to have 2 or 3 plants to produce fruit.
Determining the gender of your Papaya
However, here is a video that I have not watched that says you can do a gender reassignment with a male papaya!
Male Papaya Gender Reassignment
Number one....You will probably have a lot of papaya, unlike the people up north who do not have room for a forest, so it will probably not be an issue for you!
Thanks for the info Pete. The big one I grew was a few decades ago. I was pretty ignorant then.