This number is a prime.

+ The product of the last two digits form a number that is equal to a number formed from the first two digits of this four-digit number (21 = 3 * 7). [Avrutin]

+ 7, 37, 137, and 2137 are prime. [Avrutin]

+ Number of Santa Barbara's episodes. [Avrutin]

+ The smallest titanic prime of the form (10^x+1)/11, where x = 2137. [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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