This is the 17559th most frequent Russian word.
триллиону
The word "триллиону" in Russian is the dative case of "триллион," meaning "trillion" (1,000,000,000,000).
Here, 'триллиону' is used in the dative case to indicate an addition toward the amount — contextually employed with a preposition indicating increase.
В следующем году наша экономика прибавит к триллиону долларов.
Next year, our economy will add up to a trillion dollars.
In this usage, 'триллиону' appears in the dative case corresponding to the object of contemplation, fitting well within the abstract conceptual framework.
Ему близка мысль о триллиону возможностей.
He is fascinated by the thought of a trillion possibilities.
Here 'триллиону' in the dative case clarifies the focus of the applause, associating it with the enormous allocation dedicated to science.