302021 has 4 divisors (see below), whose sum is σ = 307200. Its totient is φ = 296844.

The previous prime is 302009. The next prime is 302053. The reversal of 302021 is 120203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120203 = 71 ⋅1693.

It is a cyclic number.

It is not a de Polignac number, because 302021 - 2¹⁰ = 300997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302221) 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, 2501 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (76800).

2³⁰²⁰²¹ is an apocalyptic number.

It is an amenable number.

302021 is a deficient number, since it is larger than the sum of its proper divisors (5179).

302021 is an equidigital number, since it uses as much as digits as its factorization.

302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178.

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

The square root of 302021 is about 549.5643729355. The cubic root of 302021 is about 67.0932835911.

Adding to 302021 its reverse (120203), we get a palindrome (422224).

It can be divided in two parts, 30202 and 1, that added together give a palindrome (30203).

The spelling of 302021 in words is "three hundred two thousand, twenty-one", and thus it is an iban number.