222230257 has 2 divisors, whose sum is σ = 222230258. Its totient is φ = 222230256.

The previous prime is 222230243. The next prime is 222230263. The reversal of 222230257 is 752032222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196868961 + 25361296 = 14031^2 + 5036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222230257 is a prime.

It is not a weakly prime, because it can be changed into another prime (222230297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111115128 + 111115129.

It is an arithmetic number, because the mean of its divisors is an integer number (111115129).

Almost surely, 2^222230257 is an apocalyptic number.

It is an amenable number.

222230257 is a deficient number, since it is larger than the sum of its proper divisors (1).

222230257 is an equidigital number, since it uses as much as digits as its factorization.

222230257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 222230257 is about 14907.3893422021. The cubic root of 222230257 is about 605.7141642695.

Adding to 222230257 its reverse (752032222), we get a palindrome (974262479).

The spelling of 222230257 in words is "two hundred twenty-two million, two hundred thirty thousand, two hundred fifty-seven".