30230131221 has 12 divisors (see below), whose sum is σ = 46234318572. Its totient is φ = 18967925376.

The previous prime is 30230131219. The next prime is 30230131229. The reversal of 30230131221 is 12213103203.

30230131221 is a `hidden beast` number, since 30 + 2 + 301 + 312 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26132339025 + 4097792196 = 161655^2 + 64014^2 .

It is not a de Polignac number, because 30230131221 - 2¹ = 30230131219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30230131194 and 30230131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30230131229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98791126 + ... + 98791431.

It is an arithmetic number, because the mean of its divisors is an integer number (3852859881).

Almost surely, 2^30230131221 is an apocalyptic number.

It is an amenable number.

30230131221 is a deficient number, since it is larger than the sum of its proper divisors (16004187351).

30230131221 is a wasteful number, since it uses less digits than its factorization.

30230131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197582580 (or 197582577 counting only the distinct ones).

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

Adding to 30230131221 its reverse (12213103203), we get a palindrome (42443234424).

The spelling of 30230131221 in words is "thirty billion, two hundred thirty million, one hundred thirty-one thousand, two hundred twenty-one".