30120330021 has 4 divisors (see below), whose sum is σ = 40160440032. Its totient is φ = 20080220012.

The previous prime is 30120330011. The next prime is 30120330029. The reversal of 30120330021 is 12003302103.

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.

It is a cyclic number.

It is not a de Polignac number, because 30120330021 - 2⁷ = 30120329893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120330029) 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 3 ways as a sum of consecutive naturals, for example, 5020055001 + ... + 5020055006.

It is an arithmetic number, because the mean of its divisors is an integer number (10040110008).

Almost surely, 2^30120330021 is an apocalyptic number.

It is an amenable number.

30120330021 is a deficient number, since it is larger than the sum of its proper divisors (10040110011).

30120330021 is a wasteful number, since it uses less digits than its factorization.

30120330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10040110010.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 30120330021 its reverse (12003302103), we get a palindrome (42123632124).

The spelling of 30120330021 in words is "thirty billion, one hundred twenty million, three hundred thirty thousand, twenty-one".