321223434032321 has 4 divisors (see below), whose sum is σ = 321883030406592. Its totient is φ = 320563837658052.

The previous prime is 321223434032273. The next prime is 321223434032327. The reversal of 321223434032321 is 123230434322123.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321223434032321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321223434032327) 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, 329798186405 + ... + 329798187378.

It is an arithmetic number, because the mean of its divisors is an integer number (80470757601648).

Almost surely, 2^{321223434032321} is an apocalyptic number.

It is an amenable number.

321223434032321 is a deficient number, since it is larger than the sum of its proper divisors (659596374271).

321223434032321 is an equidigital number, since it uses as much as digits as its factorization.

321223434032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659596374270.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 321223434032321 its reverse (123230434322123), we get a palindrome (444453868354444).

The spelling of 321223434032321 in words is "three hundred twenty-one trillion, two hundred twenty-three billion, four hundred thirty-four million, thirty-two thousand, three hundred twenty-one".