323201323112221 has 18 divisors (see below), whose sum is σ = 346764491016590. Its totient is φ = 301177700793600.

The previous prime is 323201323112197. The next prime is 323201323112231. The reversal of 323201323112221 is 122211323102323.

It can be written as a sum of positive squares in 9 ways, for example, as 11114155764100 + 312087167348121 = 3333790^2 + 17665989^2 .

It is not a de Polignac number, because 323201323112221 - 2²³ = 323201314723613 is a prime.

It is a super-2 number, since 2×323201323112221² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 323201323112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323201323112231) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51867306 + ... + 57763483.

Almost surely, 2^{323201323112221} is an apocalyptic number.

It is an amenable number.

323201323112221 is a deficient number, since it is larger than the sum of its proper divisors (23563167904369).

323201323112221 is a wasteful number, since it uses less digits than its factorization.

323201323112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109631025 (or 109630907 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 323201323112221 its reverse (122211323102323), we get a palindrome (445412646214544).

The spelling of 323201323112221 in words is "three hundred twenty-three trillion, two hundred one billion, three hundred twenty-three million, one hundred twelve thousand, two hundred twenty-one".