Two thousand and twenty one

(largest) 2210

(smallest) 1022

2 + 2 = 4

1 x 2 = 2

add them together equals 402

200

1

0

20

5

1010.5

2 - 1 = 1

2 + 7 = 9

1 x 9 = 9

add them together equals

199

1188

9 years

99 years

999 years

4042

1, 2021,47 and 43

MMXXI

6060