2222

2222 = 2 x 11 x 101.

All of the divisors of 2222 are palindromic (A062687).

2222 is the smallest number divisible by a 1-digit prime, a 2-digit prime, and a 3-digit prime.

2222 = 2¹ + 2² + 2³ + 2⁵ + 2⁷ + 2¹¹.

The sum of the reciprocals of the digits of 2222 is an integer (A034708).

The cubic powers 2³ = 8; 22³ = 10,648; 222³ = 10,941,048; 2222³ = 10,970,645,048; 22222³ = 10,973,607,685,048; and 222222³ = 10,973,903,978,085,048 do not use the digit 2.

Source: Number Gossip