No, the dictionary lists ‘anytime’ as an adverb. Here it is used as a misspelling of ‘any’ followed by the noun ‘time’. There’s also a difference in emphasis in

No, the dictionary lists ‘anytime’ as an adverb. Here it is used as a misspelling of ‘any’ followed by the noun ‘time’. There’s also a difference in emphasis in the pronunciation (first syllable is stressed for the adverb). What the dictionary is saying is that 'any time' and 'anytime' are both acceptable spellings of the adverb. But 'anytime' is never an acceptable spelling of the noun phrase 'any time'.