20023310330321 has 4 divisors (see below), whose sum is σ = 20032205628144. Its totient is φ = 20014415032500.

The previous prime is 20023310330251. The next prime is 20023310330339. The reversal of 20023310330321 is 12303301332002.

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 a de Polignac number, because none of the positive numbers 2^k-20023310330321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023310330381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4447645535 + ... + 4447650036.

It is an arithmetic number, because the mean of its divisors is an integer number (5008051407036).

Almost surely, 2^{20023310330321} is an apocalyptic number.

It is an amenable number.

20023310330321 is a deficient number, since it is larger than the sum of its proper divisors (8895297823).

20023310330321 is an equidigital number, since it uses as much as digits as its factorization.

20023310330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8895297822.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20023310330321 its reverse (12303301332002), we get a palindrome (32326611662323).

The spelling of 20023310330321 in words is "twenty trillion, twenty-three billion, three hundred ten million, three hundred thirty thousand, three hundred twenty-one".