1-866-IDOLS-PORN

3/10/2009 3:40 PM PDT BY TMZ STAFF
play audioThe folks over at "American Idol" have hit a XXX snag by upping the final 12 to 13 this year. Turns out the sequenced telephone number for contestant 13 is already in use -- by a phone sex company.

"A.I" only owns twelve numbers (1-866-IDOLS-01 through 1-866-IDOLS-12) -- the prescient porn company snatched up 1-866-IDOLS-13.

The "Idol" brass had to scramble -- they'll reveal the number for contestant 13 tonight.

Meanwhile, there's a whole bunch of hot-sounding ladies waiting for your call...