TMZ has learned ... the abode -- where Paul Giamatti's character, Marty Wolf, called home in the 2002 comedy flick -- is now available to rent for a whopping $135K a month. While that may sound like a big fat sum, the home's amenities justify the jaw-dropping price tag.

Not only does the house boast 7 bedrooms, 11 baths and 12,000 square feet of living space,  it also features a 6-car garage, an oversized landscaped patio, and a luxury fire pit that overlooks a 270-degree view, from downtown L.A. to the Pacific Ocean.

Fans of the film will, of course, recognize the pool ... in which Giamatti famously turned blue in an epic prank pulled off by Amanda Bynes and Frankie Muniz's characters.

There's no leftover blue dye to worry about ... so, potential renters can rest easy.

The residence also notably has smart technology and floor-to-ceiling windows ... thus, even if you're not a "Big Fat Liar" superfan, it's worth taking a tour.

The famed estate was once rented by Rihanna.

Daniel Milstein of Christie's International Real Estate tells TMZ ... "We are honored to be representing one of Los Angeles’ most famed and notable properties, Skycastle. This home has a legendary Hollywood history and has been apart of many peoples memories over the years."

He continues, "There is truly nothing like it out there. From the glass and concrete architecture to the legendary views of the city of Angels, this home is a true castle in the sky."