323212121321 has 4 divisors (see below), whose sum is σ = 337264822272. Its totient is φ = 309159420372.

The previous prime is 323212121303. The next prime is 323212121347. The reversal of 323212121321 is 123121212323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123121212323 = 823 ⋅149600501.

It is a cyclic number.

It is not a de Polignac number, because 323212121321 - 2³⁴ = 306032252137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 14052700927 = 323212121321 / (3 + 2 + 3 + 2 + 1 + 2 + 1 + 2 + 1 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323212121521) 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, 7026350441 + ... + 7026350486.

It is an arithmetic number, because the mean of its divisors is an integer number (84316205568).

Almost surely, 2^323212121321 is an apocalyptic number.

It is an amenable number.

323212121321 is a deficient number, since it is larger than the sum of its proper divisors (14052700951).

323212121321 is a wasteful number, since it uses less digits than its factorization.

323212121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14052700950.

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

Adding to 323212121321 its reverse (123121212323), we get a palindrome (446333333644).

The spelling of 323212121321 in words is "three hundred twenty-three billion, two hundred twelve million, one hundred twenty-one thousand, three hundred twenty-one".