222126 has 8 divisors (see below), whose sum is σ = 444264. Its totient is φ = 74040.

The previous prime is 222113. The next prime is 222127. The reversal of 222126 is 621222.

It is a sphenic number, since it is the product of 3 distinct primes.

222126 is an admirable number.

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

It is a Curzon number.

It is a nialpdrome in base 6 and base 12.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 18505 + ... + 18516.

It is an arithmetic number, because the mean of its divisors is an integer number (55533).

2²²²¹²⁶ is an apocalyptic number.

222126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222126 is a wasteful number, since it uses less digits than its factorization.

222126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37026.

The product of its digits is 96, while the sum is 15.

The square root of 222126 is about 471.3024506620. The cubic root of 222126 is about 60.5619427965.

Subtracting from 222126 its sum of digits (15), we obtain a triangular number (222111 = T₆₆₆).

Adding to 222126 its product of digits (96), we get a palindrome (222222).

Adding to 222126 its reverse (621222), we get a palindrome (843348).

It can be divided in two parts, 222 and 126, that multiplied together give a palindrome (27972).

The spelling of 222126 in words is "two hundred twenty-two thousand, one hundred twenty-six".