321120132 has 48 divisors (see below), whose sum is σ = 777181440. Its totient is φ = 103074048.

The previous prime is 321120127. The next prime is 321120187. The reversal of 321120132 is 231021123.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160128 + ... + 162120.

It is an arithmetic number, because the mean of its divisors is an integer number (16191280).

Almost surely, 2^321120132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321120132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388590720).

321120132 is an abundant number, since it is smaller than the sum of its proper divisors (456061308).

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

321120132 is a wasteful number, since it uses less digits than its factorization.

321120132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 321120132 is about 17919.8251107537. The cubic root of 321120132 is about 684.7875320948.

Adding to 321120132 its reverse (231021123), we get a palindrome (552141255).

Subtracting from 321120132 its reverse (231021123), we obtain a palindrome (90099009).

The spelling of 321120132 in words is "three hundred twenty-one million, one hundred twenty thousand, one hundred thirty-two".