321012042010420 has 24 divisors (see below), whose sum is σ = 697370987817000. Its totient is φ = 123977064500352.

The previous prime is 321012042010367. The next prime is 321012042010421. The reversal of 321012042010420 is 24010240210123.

It can be written as a sum of positive squares in 4 ways, for example, as 16000208000676 + 305011834009744 = 4000026^2 + 17464588^2 .

It is a super-2 number, since 2×321012042010420² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321012042010391 and 321012042010400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012042010421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276734518395 + ... + 276734519554.

It is an arithmetic number, because the mean of its divisors is an integer number (29057124492375).

Almost surely, 2^{321012042010420} is an apocalyptic number.

It is an amenable number.

321012042010420 is an abundant number, since it is smaller than the sum of its proper divisors (376358945806580).

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

321012042010420 is a wasteful number, since it uses less digits than its factorization.

321012042010420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553469037987 (or 553469037985 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 321012042010420 its reverse (24010240210123), we get a palindrome (345022282220543).

The spelling of 321012042010420 in words is "three hundred twenty-one trillion, twelve billion, forty-two million, ten thousand, four hundred twenty".