222123 has 16 divisors (see below), whose sum is σ = 331776. Its totient is φ = 131040.

The previous prime is 222113. The next prime is 222127. The reversal of 222123 is 321222.

It is not a de Polignac number, because 222123 - 2⁴ = 222107 is a prime.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 222099 and 222108.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1686 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (20736).

2²²²¹²³ is an apocalyptic number.

222123 is a deficient number, since it is larger than the sum of its proper divisors (109653).

222123 is a wasteful number, since it uses less digits than its factorization.

222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194.

The product of its digits is 48, while the sum is 12.

The square root of 222123 is about 471.2992679816. The cubic root of 222123 is about 60.5616701485.

Subtracting from 222123 its sum of digits (12), we obtain a triangular number (222111 = T₆₆₆).

Adding to 222123 its reverse (321222), we get a palindrome (543345).

Subtracting 222123 from its reverse (321222), we obtain a palindrome (99099).

It can be divided in two parts, 22 and 2123, that added together give a triangular number (2145 = T₆₅).

The spelling of 222123 in words is "two hundred twenty-two thousand, one hundred twenty-three", and thus it is an iban number.