321105466644421 has 4 divisors (see below), whose sum is σ = 321105958158700. Its totient is φ = 321104975130144.

The previous prime is 321105466644377. The next prime is 321105466644427. The reversal of 321105466644421 is 124446664501123.

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 79831812568225 + 241273654076196 = 8934865^2 + 15532986^2 .

It is a cyclic number.

It is not a de Polignac number, because 321105466644421 - 2²⁵ = 321105433089989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321105466644427) 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, 244775886 + ... + 246084223.

It is an arithmetic number, because the mean of its divisors is an integer number (80276489539675).

Almost surely, 2^{321105466644421} is an apocalyptic number.

It is an amenable number.

321105466644421 is a deficient number, since it is larger than the sum of its proper divisors (491514279).

321105466644421 is an equidigital number, since it uses as much as digits as its factorization.

321105466644421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491514278.

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 321105466644421 in words is "three hundred twenty-one trillion, one hundred five billion, four hundred sixty-six million, six hundred forty-four thousand, four hundred twenty-one".