323123321111221 has 4 divisors (see below), whose sum is σ = 342130575294252. Its totient is φ = 304116066928192.

The previous prime is 323123321111191. The next prime is 323123321111251. The reversal of 323123321111221 is 122111123321323.

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

It is an interprime number because it is at equal distance from previous prime (323123321111191) and next prime (323123321111251).

It can be written as a sum of positive squares in 2 ways, for example, as 262427364152100 + 60695956959121 = 16199610^2 + 7790761^2 .

It is a cyclic number.

It is not a de Polignac number, because 323123321111221 - 2⁵ = 323123321111189 is a prime.

It is a super-2 number, since 2×323123321111221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 323123321111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323123321111251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9503627091490 + ... + 9503627091523.

It is an arithmetic number, because the mean of its divisors is an integer number (85532643823563).

Almost surely, 2^{323123321111221} is an apocalyptic number.

It is an amenable number.

323123321111221 is a deficient number, since it is larger than the sum of its proper divisors (19007254183031).

323123321111221 is a wasteful number, since it uses less digits than its factorization.

323123321111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19007254183030.

The product of its digits is 2592, while the sum is 28.

Adding to 323123321111221 its reverse (122111123321323), we get a palindrome (445234444432544).

The spelling of 323123321111221 in words is "three hundred twenty-three trillion, one hundred twenty-three billion, three hundred twenty-one million, one hundred eleven thousand, two hundred twenty-one".