To solve this question we have to make deduct these 2 years. 2120 minus 1969 will give the answer.
You are 151 years old.
(1812 months are passed.)
From 1969 to 2120 there are 151 years. If you want to learn your age in 2120 (born in 1969) your age is 151.
Let's see what will be your age if you born +1 or -1 from that date.