找规律,填得数.22=2×2=12×4=4;222=22×22=112×4=484;2222=222×222=1112×4=49284;…2222222222=

2222222222=1111111112×4,

=12345678987654321×4,

=49382715950617284.

故答案为:111111111,4;12345678987654321,4;49382715950617284.