301020221 has 4 divisors (see below), whose sum is σ = 301080444. Its totient is φ = 300960000.

The previous prime is 301020193. The next prime is 301020227. The reversal of 301020221 is 122020103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122020103 = 71 ⋅1718593.

It can be written as a sum of positive squares in 2 ways, for example, as 266668900 + 34351321 = 16330^2 + 5861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-301020221 is a prime.

It is a super-2 number, since 2×301020221² = 181226346901777682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301020227) 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, 21860 + ... + 32861.

It is an arithmetic number, because the mean of its divisors is an integer number (75270111).

Almost surely, 2^301020221 is an apocalyptic number.

It is an amenable number.

301020221 is a deficient number, since it is larger than the sum of its proper divisors (60223).

301020221 is an equidigital number, since it uses as much as digits as its factorization.

301020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60222.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 301020221 is about 17349.9343226423. The cubic root of 301020221 is about 670.1909465414.

Adding to 301020221 its reverse (122020103), we get a palindrome (423040324).

The spelling of 301020221 in words is "three hundred one million, twenty thousand, two hundred twenty-one".