30213033021 has 8 divisors (see below), whose sum is σ = 44760048960. Its totient is φ = 20142021996.

The previous prime is 30213033017. The next prime is 30213033023. The reversal of 30213033021 is 12033031203.

30213033021 is a `hidden beast` number, since 302 + 1 + 30 + 330 + 2 + 1 = 666.

It is not a de Polignac number, because 30213033021 - 2² = 30213033017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30213032985 and 30213033003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213033023) 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 7 ways as a sum of consecutive naturals, for example, 559500585 + ... + 559500638.

It is an arithmetic number, because the mean of its divisors is an integer number (5595006120).

Almost surely, 2^30213033021 is an apocalyptic number.

It is an amenable number.

30213033021 is a deficient number, since it is larger than the sum of its proper divisors (14547015939).

30213033021 is a wasteful number, since it uses less digits than its factorization.

30213033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119001232 (or 1119001226 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 30213033021 its reverse (12033031203), we get a palindrome (42246064224).

The spelling of 30213033021 in words is "thirty billion, two hundred thirteen million, thirty-three thousand, twenty-one".