Bridge - 2 club opening (playing standard american) with shape and not HCP?
This is a bit of a tough hand. I think that opening 2C is fine. You're not grossly distorting the strength of the hand (as you would be with e.g. AKQJxxxxx xx xx -void-). You'll rebid 2S; if partner supports then you can start cue-bidding and if not you can bid diamonds.

If you swapped your clubs and spades, you might open 1C, planning to reverse into diamonds, as 1C is unlikely to get passed out when you hold only 19 HCP.