30231013221 has 12 divisors (see below), whose sum is σ = 45965283520. Its totient is φ = 19093271400.

The previous prime is 30231013201. The next prime is 30231013231. The reversal of 30231013221 is 12231013203.

30231013221 is a `hidden beast` number, since 30 + 2 + 310 + 1 + 322 + 1 = 666.

It is not a de Polignac number, because 30231013221 - 2⁶ = 30231013157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30231013194 and 30231013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231013201) 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, 88394605 + ... + 88394946.

Almost surely, 2^30231013221 is an apocalyptic number.

It is an amenable number.

30231013221 is a deficient number, since it is larger than the sum of its proper divisors (15734270299).

30231013221 is a wasteful number, since it uses less digits than its factorization.

30231013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176789576 (or 176789573 counting only the distinct ones).

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

Subtracting from 30231013221 its sum of digits (18), we obtain a palindrome (30231013203).

Adding to 30231013221 its reverse (12231013203), we get a palindrome (42462026424).

The spelling of 30231013221 in words is "thirty billion, two hundred thirty-one million, thirteen thousand, two hundred twenty-one".