The next Prime number after 121 is 127. A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers, and 127 meets this criterion as it has no divisors other than 1 and itself.
yes
169
112 = 121122 = 144 is your answer
21 The pattern is 121, 12321, 1234321
121.
121
121
49
100, 121, 144...
49
22
144