centuplicar

A formal, mostly hyperbolic verb meaning to increase something a hundredfold — used for dramatic effect in writing rather than precise measurement: la inversión centuplicó sus ganancias. Rare in everyday speech; multiplicar por cien or aumentar enormemente are the more natural equivalents most speakers would actually use.

• La popularidad del artista se centuplicó tras el video viral. — The artist's popularity multiplied a hundredfold after the viral video.
• Sus esfuerzos centuplicaron los resultados del proyecto. — His efforts multiplied the project's results a hundredfold.
• El valor de la propiedad se centuplicó en dos décadas. — The property's value increased a hundredfold in two decades.

Using centuplicar for a modest or literal increase — it's meant for dramatic, often exaggerated growth, not a small measured multiplication; using it for '20% more' would sound absurdly overblown.