201323122223 has 4 divisors (see below), whose sum is σ = 201398725008. Its totient is φ = 201247519440.

The previous prime is 201323122207. The next prime is 201323122229. The reversal of 201323122223 is 322221323102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201323122223 - 2⁴ = 201323122207 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 (201323122229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37797398 + ... + 37802723.

It is an arithmetic number, because the mean of its divisors is an integer number (50349681252).

Almost surely, 2^201323122223 is an apocalyptic number.

201323122223 is a deficient number, since it is larger than the sum of its proper divisors (75602785).

201323122223 is an equidigital number, since it uses as much as digits as its factorization.

201323122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75602784.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 201323122223 its reverse (322221323102), we get a palindrome (523544445325).

The spelling of 201323122223 in words is "two hundred one billion, three hundred twenty-three million, one hundred twenty-two thousand, two hundred twenty-three".