|Cardinal||two hundred eleven|
(two hundred eleventh)
211 is an odd number.
Multiplying its digits, it is still a prime (2), and adding its digits, it is square (4). Rearranging its digits, 211 becomes 121, which also is a square. Adding any two of its digits will be prime (2 or 3).
2-1-1 is special abbreviated telephone number reserved in Canada and the United States as an easy-to-remember three-digit telephone number meant to provide quick information and referrals to health and human service organizations for both services from charities and from governmental agencies.
211 is also associated with E211, the preservative sodium benzoate
211 is also an EDI (Electronic Data Interchange) document known as an Electronic Bill of Lading.
211 is also SMTP status code for system status.
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