321020014403421 has 18 divisors (see below), whose sum is σ = 489385081980990. Its totient is φ = 202749482779056.

The previous prime is 321020014403369. The next prime is 321020014403477. The reversal of 321020014403421 is 124304410020123.

321020014403421 is a `hidden beast` number, since 3 + 2 + 1 + 0 + 200 + 14 + 403 + 42 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 192095026227225 + 128924988176196 = 13859835^2 + 11354514^2 .

It is not a de Polignac number, because 321020014403421 - 2⁷ = 321020014403293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321020014443421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49402892166 + ... + 49402898663.

It is an arithmetic number, because the mean of its divisors is an integer number (27188060110055).

Almost surely, 2^{321020014403421} is an apocalyptic number.

It is an amenable number.

321020014403421 is a deficient number, since it is larger than the sum of its proper divisors (168365067577569).

321020014403421 is a wasteful number, since it uses less digits than its factorization.

321020014403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98805790873 (or 98805790851 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 321020014403421 its reverse (124304410020123), we get a palindrome (445324424423544).

The spelling of 321020014403421 in words is "three hundred twenty-one trillion, twenty billion, fourteen million, four hundred three thousand, four hundred twenty-one".