The winning numbers for the December 28 drawing were 6, 31, 51, 54, 55, with a Powerball of 12.

Just won millions in the lottery? Congratulations! Here's what to do — and more importantly, not to do — to avoid making some very big mistakes.

It’s been a busy month for lottery players. The Mega Millions jackpot now stands at a $1.22 billion ahead of a Dec. 27 drawing, after a Christmas Eve drawing failed to yield a winner. That makes it the largest such prize for either of the two big multistate lottery games — Mega Millions and Powerball — in the holiday-filled month of December,