30032121033221 has 4 divisors (see below), whose sum is σ = 30032149090944. Its totient is φ = 30032092975500.

The previous prime is 30032121033163. The next prime is 30032121033241. The reversal of 30032121033221 is 12233012123003.

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 30032121033221 - 2³⁸ = 29757243126277 is a prime.

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 (30032121033241) 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, 12356885 + ... + 14586186.

It is an arithmetic number, because the mean of its divisors is an integer number (7508037272736).

Almost surely, 2^{30032121033221} is an apocalyptic number.

It is an amenable number.

30032121033221 is a deficient number, since it is larger than the sum of its proper divisors (28057723).

30032121033221 is a wasteful number, since it uses less digits than its factorization.

30032121033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28057722.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30032121033221 its reverse (12233012123003), we get a palindrome (42265133156224).

The spelling of 30032121033221 in words is "thirty trillion, thirty-two billion, one hundred twenty-one million, thirty-three thousand, two hundred twenty-one".