300021013221 has 32 divisors (see below), whose sum is σ = 421708654080. Its totient is φ = 189521395776.

The previous prime is 300021013199. The next prime is 300021013223. The reversal of 300021013221 is 122310120003.

It is not a de Polignac number, because 300021013221 - 2⁶ = 300021013157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 300021013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300021013223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486670 + ... + 914816.

It is an arithmetic number, because the mean of its divisors is an integer number (13178395440).

Almost surely, 2^300021013221 is an apocalyptic number.

It is an amenable number.

300021013221 is a deficient number, since it is larger than the sum of its proper divisors (121687640859).

300021013221 is a wasteful number, since it uses less digits than its factorization.

300021013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428353.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 300021013221 its reverse (122310120003), we get a palindrome (422331133224).

The spelling of 300021013221 in words is "three hundred billion, twenty-one million, thirteen thousand, two hundred twenty-one".