302224221 has 18 divisors (see below), whose sum is σ = 472712058. Its totient is φ = 185983200.

The previous prime is 302224213. The next prime is 302224259. The reversal of 302224221 is 122422203.

It can be written as a sum of positive squares in 3 ways, for example, as 32936121 + 269288100 = 5739^2 + 16410^2 .

It is not a de Polignac number, because 302224221 - 2³ = 302224213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 302224194 and 302224203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302224261) 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 in 17 ways as a sum of consecutive naturals, for example, 97830 + ... + 100871.

It is an arithmetic number, because the mean of its divisors is an integer number (26261781).

Almost surely, 2^302224221 is an apocalyptic number.

It is an amenable number.

302224221 is a deficient number, since it is larger than the sum of its proper divisors (170487837).

302224221 is a wasteful number, since it uses less digits than its factorization.

302224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198733 (or 198717 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 302224221 is about 17384.5972343336. The cubic root of 302224221 is about 671.0832857930.

Adding to 302224221 its reverse (122422203), we get a palindrome (424646424).

It can be divided in two parts, 30222 and 4221, that added together give a palindrome (34443).

The spelling of 302224221 in words is "three hundred two million, two hundred twenty-four thousand, two hundred twenty-one".