222304447 has 2 divisors, whose sum is σ = 222304448. Its totient is φ = 222304446.

The previous prime is 222304421. The next prime is 222304469. The reversal of 222304447 is 744403222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222304447 - 2⁷ = 222304319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222304487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111152223 + 111152224.

It is an arithmetic number, because the mean of its divisors is an integer number (111152224).

Almost surely, 2^222304447 is an apocalyptic number.

222304447 is a deficient number, since it is larger than the sum of its proper divisors (1).

222304447 is an equidigital number, since it uses as much as digits as its factorization.

222304447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 222304447 is about 14909.8774978200. The cubic root of 222304447 is about 605.7815612337.

Adding to 222304447 its reverse (744403222), we get a palindrome (966707669).

The spelling of 222304447 in words is "two hundred twenty-two million, three hundred four thousand, four hundred forty-seven".