30021233213 has 4 divisors (see below), whose sum is σ = 30021615360. Its totient is φ = 30020851068.

The previous prime is 30021233141. The next prime is 30021233219. The reversal of 30021233213 is 31233212003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30021233213 - 2²⁴ = 30004455997 is a prime.

It is a super-3 number, since 3×30021233213³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021233219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25283 + ... + 246336.

It is an arithmetic number, because the mean of its divisors is an integer number (7505403840).

Almost surely, 2^30021233213 is an apocalyptic number.

It is an amenable number.

30021233213 is a deficient number, since it is larger than the sum of its proper divisors (382147).

30021233213 is a wasteful number, since it uses less digits than its factorization.

30021233213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382146.

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

Adding to 30021233213 its reverse (31233212003), we get a palindrome (61254445216).

The spelling of 30021233213 in words is "thirty billion, twenty-one million, two hundred thirty-three thousand, two hundred thirteen".