30021213133021 has 8 divisors (see below), whose sum is σ = 32750878294944. Its totient is φ = 27291625299120.

The previous prime is 30021213132979. The next prime is 30021213133057. The reversal of 30021213133021 is 12033131212003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30021213133021 - 2¹⁹ = 30021212608733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30021213132983 and 30021213133001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021213133421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18518755 + ... + 20074528.

It is an arithmetic number, because the mean of its divisors is an integer number (4093859786868).

Almost surely, 2^{30021213133021} is an apocalyptic number.

It is an amenable number.

30021213133021 is a deficient number, since it is larger than the sum of its proper divisors (2729665161923).

30021213133021 is a wasteful number, since it uses less digits than its factorization.

30021213133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38664011.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 30021213133021 its reverse (12033131212003), we get a palindrome (42054344345024).

The spelling of 30021213133021 in words is "thirty trillion, twenty-one billion, two hundred thirteen million, one hundred thirty-three thousand, twenty-one".