222442243 has 4 divisors (see below), whose sum is σ = 224735560. Its totient is φ = 220148928.

The previous prime is 222442237. The next prime is 222442247. The reversal of 222442243 is 342244222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222442243 - 2¹⁷ = 222311171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222442247) 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, 1146513 + ... + 1146706.

It is an arithmetic number, because the mean of its divisors is an integer number (56183890).

Almost surely, 2^222442243 is an apocalyptic number.

222442243 is a deficient number, since it is larger than the sum of its proper divisors (2293317).

222442243 is an equidigital number, since it uses as much as digits as its factorization.

222442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293316.

The product of its digits is 6144, while the sum is 25.

The square root of 222442243 is about 14914.4977454824. The cubic root of 222442243 is about 605.9067004828.

Adding to 222442243 its reverse (342244222), we get a palindrome (564686465).

The spelling of 222442243 in words is "two hundred twenty-two million, four hundred forty-two thousand, two hundred forty-three".