python3, 44 bytes

Result

WA

Code [DL]

 print(''.join(map(str,sorted(map(int,s)))))

stdin

2721135816655032852797585122735107493397868253595671748984020509896968008552875328396016207109381077

stdout

stderr

  File "/volume/CODE", line 1
    print(''.join(map(str,sorted(map(int,s)))))
    ^
IndentationError: unexpected indent

strace