301001221 has 4 divisors (see below), whose sum is σ = 301103244. Its totient is φ = 300899200.

The previous prime is 301001203. The next prime is 301001251. The reversal of 301001221 is 122100103.

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 168636196 + 132365025 = 12986^2 + 11505^2 .

It is a cyclic number.

It is not a de Polignac number, because 301001221 - 2⁷ = 301001093 is a prime.

It is a Duffinian number.

301001221 is a modest number, since divided by 1221 gives 301 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 301001198 and 301001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301001251) 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 3 ways as a sum of consecutive naturals, for example, 46450 + ... + 52531.

It is an arithmetic number, because the mean of its divisors is an integer number (75275811).

Almost surely, 2^301001221 is an apocalyptic number.

It is an amenable number.

301001221 is a deficient number, since it is larger than the sum of its proper divisors (102023).

301001221 is an equidigital number, since it uses as much as digits as its factorization.

301001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102022.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 301001221 is about 17349.3867614968. The cubic root of 301001221 is about 670.1768457213.

Adding to 301001221 its reverse (122100103), we get a palindrome (423101324).

The spelling of 301001221 in words is "three hundred one million, one thousand, two hundred twenty-one".