30231221013 has 48 divisors (see below), whose sum is σ = 51665627520. Its totient is φ = 16666618752.

The previous prime is 30231221011. The next prime is 30231221017. The reversal of 30231221013 is 31012213203.

It is not a de Polignac number, because 30231221013 - 2¹ = 30231221011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2722170 + ... + 2733252.

It is an arithmetic number, because the mean of its divisors is an integer number (1076367240).

Almost surely, 2^30231221013 is an apocalyptic number.

It is an amenable number.

30231221013 is a deficient number, since it is larger than the sum of its proper divisors (21434406507).

30231221013 is a wasteful number, since it uses less digits than its factorization.

30231221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12618 (or 12615 counting only the distinct ones).

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

Adding to 30231221013 its reverse (31012213203), we get a palindrome (61243434216).

The spelling of 30231221013 in words is "thirty billion, two hundred thirty-one million, two hundred twenty-one thousand, thirteen".