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

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

ˈtwɛnti wʌn ˈbɪljən ˈmɪljən ˈθaʊz(ə)nd wʌn ˈhʌndrəd ˈfɪfti ˈsɛv(ə)n