ISBN 2221107348 hat failed the check­sum digit test.
The following 14 formally correct ISBNs were determined. Starting from these ISBNs the value 2221107348 that you input could have resulted frome one error (error in one digit or transposition of two digits.) You can now check using the links given for the catalogs of amazon.co.uk, amazon.com and amazon.de whether any book is listed for the respective URL. To the home page
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ISBN prefix group: English language
ISBNas­su­med er­rorCatalogs for checking
0-221-12734-81st and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-221-10734-8first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: French language
ISBNas­su­med er­rorCatalogs for checking
2-221-10734-9tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-221-10743-88th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-221-10774-8eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-221-14730-86th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-221-19734-8sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-221-30734-8fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-221-40731-85th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-221-70134-85th and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-229-10734-8fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-241-10732-83rd and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
2-291-10734-8third digit was chan­ged. amazon.co.uk amazon.com amazon.de
2-7211-0734-8second digit was chan­ged. amazon.co.uk amazon.com amazon.de

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