Can metamagic feats be applied to Apocalypse from the Sky?

Apocalypse from the Sky is a 9th level spell from the Book of Vile Darkness. Epic level rules allow for spell slots higher than 9th level, so assuming one had access to those, could such feats be applied? This would make an already powerful spell even more dangerous (example: widen spell). But I can’t see a rule that would forbid this.