Intervalums or Intervallums: How To spell?

The word Intervalums is misspelled against Intervallums, which is plural of "Intervallum"

Intervallums has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings interva & ums which should not be misspelled with single 'L'
Wrong Spelling:  interva-l-ums 
Correct Spelling:  interva-ll-ums 
Check more misspelled words of Intervallums to spell it correct.