302220121 has 4 divisors (see below), whose sum is σ = 345394432. Its totient is φ = 259045812.

The previous prime is 302220119. The next prime is 302220157. The reversal of 302220121 is 121022203.

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: 121022203 = 439 ⋅275677.

It is a cyclic number.

It is not a de Polignac number, because 302220121 - 2¹ = 302220119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (302220521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21587145 + ... + 21587158.

It is an arithmetic number, because the mean of its divisors is an integer number (86348608).

Almost surely, 2^302220121 is an apocalyptic number.

It is an amenable number.

302220121 is a deficient number, since it is larger than the sum of its proper divisors (43174311).

302220121 is an equidigital number, since it uses as much as digits as its factorization.

302220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43174310.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 302220121 is about 17384.4793134566. The cubic root of 302220121 is about 671.0802511213.

Adding to 302220121 its reverse (121022203), we get a palindrome (423242324).

The spelling of 302220121 in words is "three hundred two million, two hundred twenty thousand, one hundred twenty-one".