This is actually possible. If you have Alexa, there are many automations you can set up through 3rd party apps such as Simple Commands and IFTTT. Once you setup the routine in the app and then use that in Alexa, you can arm, disarm, set off the alarm, all with a set command. Once you learn how to use the
3rd party apps with Alexa, there’s no limit to what you can do.