201023330321 has 4 divisors (see below), whose sum is σ = 219298178544. Its totient is φ = 182748482100.

The previous prime is 201023330293. The next prime is 201023330327. The reversal of 201023330321 is 123033320102.

201023330321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-201023330321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201023330293 and 201023330302.

It is not an unprimeable number, because it can be changed into a prime (201023330327) 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, 9137424095 + ... + 9137424116.

It is an arithmetic number, because the mean of its divisors is an integer number (54824544636).

Almost surely, 2^201023330321 is an apocalyptic number.

It is an amenable number.

201023330321 is a deficient number, since it is larger than the sum of its proper divisors (18274848223).

201023330321 is a wasteful number, since it uses less digits than its factorization.

201023330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274848222.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 201023330321 its reverse (123033320102), we get a palindrome (324056650423).

The spelling of 201023330321 in words is "two hundred one billion, twenty-three million, three hundred thirty thousand, three hundred twenty-one".