321054144521012 has 18 divisors (see below), whose sum is σ = 653574508489602. Its totient is φ = 137594633366064.

The previous prime is 321054144520943. The next prime is 321054144521053. The reversal of 321054144521012 is 210125441450123.

It can be written as a sum of positive squares in only one way, i.e., 320650406277796 + 403738243216 = 17906714^2 + 635404^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 819015674603 + ... + 819015674994.

It is an arithmetic number, because the mean of its divisors is an integer number (36309694916089).

Almost surely, 2^{321054144521012} is an apocalyptic number.

It is an amenable number.

321054144521012 is an abundant number, since it is smaller than the sum of its proper divisors (332520363968590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321054144521012 is a wasteful number, since it uses less digits than its factorization.

321054144521012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638031349615 (or 1638031349606 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 321054144521012 its reverse (210125441450123), we get a palindrome (531179585971135).

The spelling of 321054144521012 in words is "three hundred twenty-one trillion, fifty-four billion, one hundred forty-four million, five hundred twenty-one thousand, twelve".