304222021 has 8 divisors (see below), whose sum is σ = 322821504. Its totient is φ = 285700800.

The previous prime is 304222019. The next prime is 304222027. The reversal of 304222021 is 120222403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304222021 - 2¹ = 304222019 is a prime.

It is a super-2 number, since 2×304222021² = 185102076122648882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304221986 and 304222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304222027) 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 7 ways as a sum of consecutive naturals, for example, 11455 + ... + 27196.

It is an arithmetic number, because the mean of its divisors is an integer number (40352688).

Almost surely, 2^304222021 is an apocalyptic number.

It is an amenable number.

304222021 is a deficient number, since it is larger than the sum of its proper divisors (18599483).

304222021 is a wasteful number, since it uses less digits than its factorization.

304222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39131.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 304222021 is about 17441.9615009322. The cubic root of 304222021 is about 672.5587321277.

Adding to 304222021 its reverse (120222403), we get a palindrome (424444424).

The spelling of 304222021 in words is "three hundred four million, two hundred twenty-two thousand, twenty-one".