300001221 has 24 divisors (see below), whose sum is σ = 468748280. Its totient is φ = 183793536.

The previous prime is 300001211. The next prime is 300001243. The reversal of 300001221 is 122100003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28740321 + 271260900 = 5361^2 + 16470^2 .

It is not a de Polignac number, because 300001221 - 2⁵ = 300001189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

300001221 is a modest number, since divided by 1221 gives 300 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300001211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21195 + ... + 32391.

Almost surely, 2^300001221 is an apocalyptic number.

It is an amenable number.

300001221 is a deficient number, since it is larger than the sum of its proper divisors (168747059).

300001221 is a wasteful number, since it uses less digits than its factorization.

300001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11445 (or 11442 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 300001221 is about 17320.5433228868. The cubic root of 300001221 is about 669.4338582783.

Adding to 300001221 its reverse (122100003), we get a palindrome (422101224).

The spelling of 300001221 in words is "three hundred million, one thousand, two hundred twenty-one".