vigintillionth

• a word derived from vigintillion.
  vigintillion

  noun

  a cardinal number represented in the U.S. by 1 followed by 63 zeros, and in Great Britain by 1 followed by 120 zeros.

More Suggestions

• quintillion
• centillion
• millionth
• scintillant
• scintillon
• Quintilian
• cotillion
• gazillion
• gillion