222128 has 10 divisors (see below), whose sum is σ = 430404. Its totient is φ = 111056.

The previous prime is 222127. The next prime is 222137. The reversal of 222128 is 821222.

222128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6926 + ... + 6957.

2²²²¹²⁸ is an apocalyptic number.

It is an amenable number.

222128 is a deficient number, since it is larger than the sum of its proper divisors (208276).

222128 is a wasteful number, since it uses less digits than its factorization.

222128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13891 (or 13885 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 222128 is about 471.3045724370. The cubic root of 222128 is about 60.5621245605.

Subtracting from 222128 its sum of digits (17), we obtain a triangular number (222111 = T₆₆₆).

The spelling of 222128 in words is "two hundred twenty-two thousand, one hundred twenty-eight".