Answer:
Interest earned in 12 years = 57178
Explanation:

A = total amount
P = principal or amount of money deposited,
r = annual interest rate
n = number of times compounded per year
t = time in years
then
P=22000 , r=12% , n=12 and t=12 years
putting these value

= 22000(2.5992729255593856)
= 57178