30233213021 has 16 divisors (see below), whose sum is σ = 33411087360. Its totient is φ = 27127155120.

The previous prime is 30233212991. The next prime is 30233213039. The reversal of 30233213021 is 12031233203.

It is a cyclic number.

It is not a de Polignac number, because 30233213021 - 2¹⁸ = 30232950877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30233212984 and 30233213002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30233213821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3717866 + ... + 3725988.

It is an arithmetic number, because the mean of its divisors is an integer number (2088192960).

Almost surely, 2^30233213021 is an apocalyptic number.

It is an amenable number.

30233213021 is a deficient number, since it is larger than the sum of its proper divisors (3177874339).

30233213021 is a wasteful number, since it uses less digits than its factorization.

30233213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12496.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30233213021 its reverse (12031233203), we get a palindrome (42264446224).

The spelling of 30233213021 in words is "thirty billion, two hundred thirty-three million, two hundred thirteen thousand, twenty-one".