A:AnswerNot sure the model number would be the key.. any case that fits the iPad 10th gen will fit the A16–the physical dimensions are exactly the same. I know because I have an OtterBox case (which are designed to wrap snugly around the devices they are made for) and just switched from the 10 to the A16 and it fits perfectly! Here’s the model for the cover to give you an idea of what I’m referring to: “OtterBox Defender Series Case for iPad (A16) & iPad 10th Gen - Black, Rugged, Durable, Multi-Layer Protection”
A:AnswerYes, the iPad is compatible with Verizon. You can use it with a Verizon cellular plan if you purchase the cellular model. If you have the Wi-Fi–only model, it will connect to the internet via Wi-Fi but will not support cellular service.
A:AnswerYes, but I don't recommend it. Apple Pencil is over-priced unless you are a creator and you draw a lot with your iPad. For everyday usage, a third-party stylus is plenty enough for writing on iPad. Save your hard-earned money.