4211

This number is a prime.

The largest 4-digit prime such that the sum of digits is equal to the product of digits. [Loungrides]

4211 is the smallest start of a run of 15 consecutive primes (from 4211 to 4297) producing 15 increasing primes for the last two digits. [Rivera]

The "party pooper" prime. (See time mark 9:53.) [Haram]