How Do you Pronounce two billion four hundred zero million thousand twenty one in english ?

two billion four hundred zero million thousand twenty one Pronunciation in english(IPA) :

tuː ˈbɪljən fɔː ˈhʌndrəd ˈzɪərəʊ ˈmɪljən ˈθaʊz(ə)nd ˈtwɛnti wʌn