Get ready, because from 1110 to 1119 we will only get Peak Piece!
111 can be read as himitsu, 秘密, secret.
Oda will slowly reveal a lot of secrets in the next chapters.
16 is Imu's and Buddha's number
6 can be read as mu, ム, th Zen koan, void, emptyness, nothing, dream or the Lost continent...