20331233003221 has 4 divisors (see below), whose sum is σ = 23235694860832. Its totient is φ = 17426771145612.

The previous prime is 20331233003111. The next prime is 20331233003243. The reversal of 20331233003221 is 12230033213302.

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 20331233003221 - 2¹⁹ = 20331232478933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331233003321) 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 3 ways as a sum of consecutive naturals, for example, 1452230928795 + ... + 1452230928808.

It is an arithmetic number, because the mean of its divisors is an integer number (5808923715208).

Almost surely, 2^{20331233003221} is an apocalyptic number.

It is an amenable number.

20331233003221 is a deficient number, since it is larger than the sum of its proper divisors (2904461857611).

20331233003221 is an equidigital number, since it uses as much as digits as its factorization.

20331233003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904461857610.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 20331233003221 its reverse (12230033213302), we get a palindrome (32561266216523).

The spelling of 20331233003221 in words is "twenty trillion, three hundred thirty-one billion, two hundred thirty-three million, three thousand, two hundred twenty-one".