300000221 has 4 divisors (see below), whose sum is σ = 303371100. Its totient is φ = 296629344.

The previous prime is 300000167. The next prime is 300000251. The reversal of 300000221 is 122000003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64224196 + 235776025 = 8014^2 + 15355^2 .

It is a cyclic number.

It is not a de Polignac number, because 300000221 - 2¹⁸ = 299738077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 300000199 and 300000208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300000251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685306 + ... + 1685483.

It is an arithmetic number, because the mean of its divisors is an integer number (75842775).

Almost surely, 2^300000221 is an apocalyptic number.

It is an amenable number.

300000221 is a deficient number, since it is larger than the sum of its proper divisors (3370879).

300000221 is an equidigital number, since it uses as much as digits as its factorization.

300000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370878.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 300000221 is about 17320.5144554081. The cubic root of 300000221 is about 669.4331144651.

Adding to 300000221 its reverse (122000003), we get a palindrome (422000224).

The spelling of 300000221 in words is "three hundred million, two hundred twenty-one", and thus it is an aban number.