The Collaborative International Dictionary of English v.0.48:

outlandishness \out*land"ish*ness\ n.
   The quality of being strikingly out of the ordinary; the
   quality of being outlandish[2].

   Syn: bizarreness, weirdness.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

outlandishness
    n 1: strikingly out of the ordinary [syn: outlandishness,
         bizarreness, weirdness]