201223202321 has 16 divisors (see below), whose sum is σ = 212597151360. Its totient is φ = 189928851840.

The previous prime is 201223202317. The next prime is 201223202347. The reversal of 201223202321 is 123202322102.

It is a happy number.

It is not a de Polignac number, because 201223202321 - 2² = 201223202317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201223202293 and 201223202302.

It is not an unprimeable number, because it can be changed into a prime (201223202821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5861276 + ... + 5895506.

It is an arithmetic number, because the mean of its divisors is an integer number (13287321960).

Almost surely, 2^201223202321 is an apocalyptic number.

It is an amenable number.

201223202321 is a deficient number, since it is larger than the sum of its proper divisors (11373949039).

201223202321 is a wasteful number, since it uses less digits than its factorization.

201223202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35384.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 201223202321 its reverse (123202322102), we get a palindrome (324425524423).

The spelling of 201223202321 in words is "two hundred one billion, two hundred twenty-three million, two hundred two thousand, three hundred twenty-one".