321221232112132 has 48 divisors (see below), whose sum is σ = 613649905585920. Its totient is φ = 145912187367200.

The previous prime is 321221232112049. The next prime is 321221232112147. The reversal of 321221232112132 is 231211232122123.

It is a self number, because there is not a number n which added to its sum of digits gives 321221232112132.

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 15 ways as a sum of consecutive naturals, for example, 3371751963 + ... + 3371847229.

It is an arithmetic number, because the mean of its divisors is an integer number (12784373033040).

Almost surely, 2^{321221232112132} is an apocalyptic number.

It is an amenable number.

321221232112132 is a deficient number, since it is larger than the sum of its proper divisors (292428673473788).

321221232112132 is a wasteful number, since it uses less digits than its factorization.

321221232112132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145632 (or 145630 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

Adding to 321221232112132 its reverse (231211232122123), we get a palindrome (552432464234255).

Subtracting from 321221232112132 its reverse (231211232122123), we obtain a palindrome (90009999990009).

The spelling of 321221232112132 in words is "three hundred twenty-one trillion, two hundred twenty-one billion, two hundred thirty-two million, one hundred twelve thousand, one hundred thirty-two".