Decilionth or Decillionth: How To spell?
The word Decilionth is misspelled against Decillionth, a noun meaning "One of a decillion equal parts."
Decillionth has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings deci & ionth which should not be misspelled with single 'L'
Wrong Spelling:  deci-l-ionth  Correct Spelling:  deci-ll-ionth 
Find more incorrect spellings of Decillionth to spell right way.