321213021130 has 16 divisors (see below), whose sum is σ = 592285473864. Its totient is φ = 125351422720.

The previous prime is 321213021127. The next prime is 321213021131. The reversal of 321213021130 is 31120312123.

It can be written as a sum of positive squares in 4 ways, for example, as 244114058241 + 77098962889 = 494079^2 + 277667^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321213021098 and 321213021107.

It is not an unprimeable number, because it can be changed into a prime (321213021131) 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, 391722787 + ... + 391723606.

Almost surely, 2^321213021130 is an apocalyptic number.

321213021130 is a deficient number, since it is larger than the sum of its proper divisors (271072452734).

321213021130 is a wasteful number, since it uses less digits than its factorization.

321213021130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783446441.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 321213021130 its reverse (31120312123), we get a palindrome (352333333253).

The spelling of 321213021130 in words is "three hundred twenty-one billion, two hundred thirteen million, twenty-one thousand, one hundred thirty".