It really depends on the quality of players at the table. If you are playing against decent players, they will see a raise from UTG as very strong and will only call with premium hands. So you could raise from UTG with 22 to completely throw off your opponents' assessment of your range. But of course, you risk someone actually having a hand calling you or, worse, re-raising you. When reraised, you have to fold this hand.
Perception is everything in poker. Raising UTG with 22 makes people think you have a strong hand. But, if you play against weak players they may not be skilled enough to make that assumption.
Funny how I'm basically implying that you should play 22 UTG more often with stronger players than with weaker players. This seems coutner intuitive but if you think about it, a strong raise from UTG will result in most strong players with less than premium hands folding.
If you do get to see a flop with 22 from UTG and you do not get your third 2 right away, you can oftentimes go ahead and bet half the pot anyways because your strong raise preflop puts you in a position to bluff post-flop no matter what the flop is (if the flop is low cards then opponents will assume you have a high pocket pair, if the flop is high cards they will assume you hit your draw).