There may be 'many differing opinions' on HIV transmission risk after such an exposure, but not from anybody who knows even a smidgen of science about HIV transmission. And if you have indeed read the archives, you already know my opinion. As peekawho already responded (below), there was zero risk from the events you describe.
No 'yes, but' or 'what if' follow up questions, please. I won't have further comments.
I think the very fact that you used finger cots to manually stimuate a woman and are now asking about not only HIV, but ways in which to "sterilize" your hands, speaks volumes.
HIV is not transmitted by hand to genital contact. There is no way to sterilize your hands, in any event. Good old soap and water is all you need.