321040121140 has 96 divisors (see below), whose sum is σ = 703343886336. Its totient is φ = 122952366720.

The previous prime is 321040121131. The next prime is 321040121173. The reversal of 321040121140 is 41121040123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106197669 + ... + 106200691.

It is an arithmetic number, because the mean of its divisors is an integer number (7326498816).

Almost surely, 2^321040121140 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 321040121140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351671943168).

321040121140 is an abundant number, since it is smaller than the sum of its proper divisors (382303765196).

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

321040121140 is a wasteful number, since it uses less digits than its factorization.

321040121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4829 (or 4827 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 321040121140 its reverse (41121040123), we get a palindrome (362161161263).

The spelling of 321040121140 in words is "three hundred twenty-one billion, forty million, one hundred twenty-one thousand, one hundred forty".