302130013221 has 12 divisors (see below), whose sum is σ = 448204884972. Its totient is φ = 195976224576.

The previous prime is 302130013201. The next prime is 302130013243. The reversal of 302130013221 is 122310031203.

302130013221 is a `hidden beast` number, since 302 + 130 + 0 + 13 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 228316730625 + 73813282596 = 477825^2 + 271686^2 .

It is not a de Polignac number, because 302130013221 - 2⁷ = 302130013093 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 302130013194 and 302130013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302130013201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453648336 + ... + 453649001.

It is an arithmetic number, because the mean of its divisors is an integer number (37350407081).

Almost surely, 2^302130013221 is an apocalyptic number.

It is an amenable number.

302130013221 is a deficient number, since it is larger than the sum of its proper divisors (146074871751).

302130013221 is a wasteful number, since it uses less digits than its factorization.

302130013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907297380 (or 907297377 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 302130013221 its reverse (122310031203), we get a palindrome (424440044424).

The spelling of 302130013221 in words is "three hundred two billion, one hundred thirty million, thirteen thousand, two hundred twenty-one".