321011330212 has 24 divisors (see below), whose sum is σ = 564178993560. Its totient is φ = 159818588160.

The previous prime is 321011330209. The next prime is 321011330317. The reversal of 321011330212 is 212033110123.

It can be written as a sum of positive squares in 4 ways, for example, as 36395482176 + 284615848036 = 190776^2 + 533494^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321011330212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869364 + ... + 1182292.

It is an arithmetic number, because the mean of its divisors is an integer number (23507458065).

Almost surely, 2^321011330212 is an apocalyptic number.

It is an amenable number.

321011330212 is a deficient number, since it is larger than the sum of its proper divisors (243167663348).

321011330212 is a wasteful number, since it uses less digits than its factorization.

321011330212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314031 (or 314029 counting only the distinct ones).

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

Adding to 321011330212 its reverse (212033110123), we get a palindrome (533044440335).

The spelling of 321011330212 in words is "three hundred twenty-one billion, eleven million, three hundred thirty thousand, two hundred twelve".