323212230220221 has 6 divisors (see below), whose sum is σ = 466862110318110. Its totient is φ = 215474820146808.

The previous prime is 323212230220219. The next prime is 323212230220241. The reversal of 323212230220221 is 122022032212323.

323212230220221 is a `hidden beast` number, since 3 + 2 + 3 + 212 + 2 + 3 + 0 + 220 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 292852681217721 + 30359549002500 = 17112939^2 + 5509950^2 .

It is not a de Polignac number, because 323212230220221 - 2¹ = 323212230220219 is a prime.

It is a super-2 number, since 2×323212230220221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323212230220241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17956235012226 + ... + 17956235012243.

It is an arithmetic number, because the mean of its divisors is an integer number (77810351719685).

Almost surely, 2^{323212230220221} is an apocalyptic number.

It is an amenable number.

323212230220221 is a deficient number, since it is larger than the sum of its proper divisors (143649880097889).

323212230220221 is a wasteful number, since it uses less digits than its factorization.

323212230220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35912470024475 (or 35912470024472 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 323212230220221 its reverse (122022032212323), we get a palindrome (445234262432544).

The spelling of 323212230220221 in words is "three hundred twenty-three trillion, two hundred twelve billion, two hundred thirty million, two hundred twenty thousand, two hundred twenty-one".