222222241 has 2 divisors, whose sum is σ = 222222242. Its totient is φ = 222222240.

The previous prime is 222222227. The next prime is 222222277. The reversal of 222222241 is 142222222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222129216 + 93025 = 14904^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222222241 is a prime.

It is not a weakly prime, because it can be changed into another prime (222222281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111120 + 111111121.

It is an arithmetic number, because the mean of its divisors is an integer number (111111121).

Almost surely, 2^222222241 is an apocalyptic number.

It is an amenable number.

222222241 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222241 is an equidigital number, since it uses as much as digits as its factorization.

222222241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 19.

The square root of 222222241 is about 14907.1204798244. The cubic root of 222222241 is about 605.7068813381.

Subtracting from 222222241 its sum of digits (19), we obtain a palindrome (222222222).

Adding to 222222241 its reverse (142222222), we get a palindrome (364444463).

The spelling of 222222241 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred forty-one".