323212312121 has 4 divisors (see below), whose sum is σ = 323420434932. Its totient is φ = 323004189312.

The previous prime is 323212312081. The next prime is 323212312123. The reversal of 323212312121 is 121213212323.

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

It can be written as a sum of positive squares in 2 ways, for example, as 137317678096 + 185894634025 = 370564^2 + 431155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323212312121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (323212312123) 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, 104059076 + ... + 104062181.

It is an arithmetic number, because the mean of its divisors is an integer number (80855108733).

Almost surely, 2^323212312121 is an apocalyptic number.

It is an amenable number.

323212312121 is a deficient number, since it is larger than the sum of its proper divisors (208122811).

323212312121 is a wasteful number, since it uses less digits than its factorization.

323212312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208122810.

The product of its digits is 864, while the sum is 23.

Adding to 323212312121 its reverse (121213212323), we get a palindrome (444425524444).

The spelling of 323212312121 in words is "three hundred twenty-three billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty-one".