321420020231421 has 12 divisors (see below), whose sum is σ = 491583560354172. Its totient is φ = 201675306811776.

The previous prime is 321420020231381. The next prime is 321420020231461. The reversal of 321420020231421 is 124132020024123.

321420020231421 is a `hidden beast` number, since 3 + 2 + 1 + 4 + 2 + 0 + 0 + 2 + 0 + 231 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (321420020231381) and next prime (321420020231461).

It can be written as a sum of positive squares in 2 ways, for example, as 238253116702500 + 83166903528921 = 15435450^2 + 9119589^2 .

It is not a de Polignac number, because 321420020231421 - 2⁷ = 321420020231293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321420020231461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1050392222826 + ... + 1050392223131.

It is an arithmetic number, because the mean of its divisors is an integer number (40965296696181).

Almost surely, 2^{321420020231421} is an apocalyptic number.

It is an amenable number.

321420020231421 is a deficient number, since it is larger than the sum of its proper divisors (170163540122751).

321420020231421 is a wasteful number, since it uses less digits than its factorization.

321420020231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100784445980 (or 2100784445977 counting only the distinct ones).

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

Adding to 321420020231421 its reverse (124132020024123), we get a palindrome (445552040255544).

The spelling of 321420020231421 in words is "three hundred twenty-one trillion, four hundred twenty billion, twenty million, two hundred thirty-one thousand, four hundred twenty-one".