323140243222221 has 32 divisors (see below), whose sum is σ = 440150632172160. Its totient is φ = 210825974707200.

The previous prime is 323140243222217. The next prime is 323140243222249. The reversal of 323140243222221 is 122222342041323.

It is not a de Polignac number, because 323140243222221 - 2² = 323140243222217 is a prime.

It is a super-2 number, since 2×323140243222221² (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 (323140243242221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49949161 + ... + 56046401.

It is an arithmetic number, because the mean of its divisors is an integer number (13754707255380).

Almost surely, 2^{323140243222221} is an apocalyptic number.

It is an amenable number.

323140243222221 is a deficient number, since it is larger than the sum of its proper divisors (117010388949939).

323140243222221 is a wasteful number, since it uses less digits than its factorization.

323140243222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099197.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 323140243222221 its reverse (122222342041323), we get a palindrome (445362585263544).

The spelling of 323140243222221 in words is "three hundred twenty-three trillion, one hundred forty billion, two hundred forty-three million, two hundred twenty-two thousand, two hundred twenty-one".