How Do you Pronounce twenty one billion million thousand seventy seven in english ?

twenty one billion million thousand seventy seven Pronunciation in english(IPA) :

ˈtwɛnti wʌn ˈbɪljən ˈmɪljən ˈθaʊz(ə)nd ˈsɛv(ə)nti ˈsɛv(ə)n