323220121 has 24 divisors (see below), whose sum is σ = 387335520. Its totient is φ = 268777152.

The previous prime is 323220119. The next prime is 323220137. The reversal of 323220121 is 121022323.

It is not a de Polignac number, because 323220121 - 2¹ = 323220119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323220095 and 323220104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323200121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376725 + ... + 377581.

It is an arithmetic number, because the mean of its divisors is an integer number (16138980).

Almost surely, 2^323220121 is an apocalyptic number.

It is an amenable number.

323220121 is a deficient number, since it is larger than the sum of its proper divisors (64115399).

323220121 is a wasteful number, since it uses less digits than its factorization.

323220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 323220121 is about 17978.3236426537. The cubic root of 323220121 is about 686.2770295800.

Adding to 323220121 its reverse (121022323), we get a palindrome (444242444).

The spelling of 323220121 in words is "three hundred twenty-three million, two hundred twenty thousand, one hundred twenty-one".