Anagrammatic cousin of 21

• Jackie O.'s husband
• "Side to Side" singer Grande, for short
• Spokesman Fleischer
• The Cardinals, on scoreboards
• Coloratura's number
• Cal-Nev-___, Nevada
• 'Exodus' character
• Uris protagonist
• Hollywood agent Emanuel whose brother Rahm is the White House chief of staff

Wikipedia Word definitions in Wikipedia
Ari could refer to names of various languages, or shortened versions of other names.