python1, 31 bytes

Result

WA

Code [DL]

print(''.join(sorted(input())))

stdin

2151464545322033700573041975007906777495440926026081634792083729397120273809364380817788666269473729

stdout

stderr

Traceback (innermost last):
  File "/volume/CODE", line 1
    print(''.join(sorted(input())))
TypeError: attribute-less object

strace