321121021330 has 16 divisors (see below), whose sum is σ = 578044067544. Its totient is φ = 128442579840.

The previous prime is 321121021303. The next prime is 321121021367. The reversal of 321121021330 is 33120121123.

It can be written as a sum of positive squares in 4 ways, for example, as 280812026889 + 40308994441 = 529917^2 + 200771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321121021298 and 321121021307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493587 + ... + 941206.

Almost surely, 2^321121021330 is an apocalyptic number.

321121021330 is a deficient number, since it is larger than the sum of its proper divisors (256923046214).

321121021330 is a wasteful number, since it uses less digits than its factorization.

321121021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457181.

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

Adding to 321121021330 its reverse (33120121123), we get a palindrome (354241142453).

The spelling of 321121021330 in words is "three hundred twenty-one billion, one hundred twenty-one million, twenty-one thousand, three hundred thirty".