Concept:To find the remainder when dividing by 12, divide step by step or use the fact that 12 = 3 × 4.Explanation:Divide 121012 by 12. 12 × 10084 = 121008. Subtract: 121012 − 121008 = 4. So the remainder is 4.Alternatively, check divisibility: Sum of digits = 1+2+1+0+1+2 = 7, not divisible by 3, so not divisible by 12. The remainder is 4.