101
101 is the smallest odd 3-digit number.
oneThe smallest 3 digit odd number is 101.
101 is the smallest 3 digit odd whole number
The smallest 3-digit odd number is 101.
The smallest 3-digit number is 100, which is an even number.
101
999-101=898
101
101
111.
As the number is odd it must end in an odd digit; the odd digits are 1, 3, 5, 7, 9 and the smallest is 1 which is the sum of 1 and 0. Thus the smallest 7-digit number which meets your criteria is 1,001,001
103