Synchronizing with rsync outputs error "Invalid argument (22)" for directories with dots and other symbols in their name

I tried to synchronize /dir1 (ext4) and /dir2 (ntfs) using rsync -azP, but got these errors:

rsync: recv_generator: mkdir "dir2/X.Y." failed: Invalid argument (22)

rsync: recv_generator: mkdir "dir2/CATSNDOGS\#123.11." failed: Invalid argument (22)

Note that directories X.Y. and CATSNDOGS #123.11. are created by other party and, named as they are, downloaded (using Python script) to /dir1. I can't cd into these directories and ls -d doesn't list them. On the other hand, GUI-based *nautilus* shows both them and content inside them perfectly.