If Prophet Muhammad(Pbuh) was illiterate, then was Umar right about Prophet talking non sense?

thanks ....THE FIRST FIVE AYTES......cinfirmed that ....all all knowedge has been transfered to holy prophet ..........he was not at all illiterate ...but city of knowedge ........word city use to make people easier ....other wise holy prophet is universe of knowedge............regadring pen paper ....this was mistake by muslims ...they should have .........but history repeat itselves .........after 30 years ....MUSLIMS PRESENTED PAPER. duly stamped..AND PEN....to imam han ......who resemble holy prophet the most.......countless salutes to holy imam han a.s