The sentences will run concurrently.
The 34-year-old was arrested last year following a five-year long investigation.
Mki stared straight ahead of him, frowning as he heard he would spend the rest of his life in prison.
He pleaded guilty to all 84 charges against him, including 30 counts of rape.
The serial rapist took the witness stand last week, saying he was sorry for the crimes he committed.
He attacked women and children in Delft and Khayelitsha between 2011 and 2015.
Nine of his victims were under the age of 16, while the youngest was 11.