321220141000 has 128 divisors (see below), whose sum is σ = 820465925760. Its totient is φ = 116739168000.

The previous prime is 321220140979. The next prime is 321220141043. The reversal of 321220141000 is 141022123.

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, 21255447 + ... + 21270553.

It is an arithmetic number, because the mean of its divisors is an integer number (6409890045).

Almost surely, 2^321220141000 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 321220141000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410232962880).

321220141000 is an abundant number, since it is smaller than the sum of its proper divisors (499245784760).

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

321220141000 is a wasteful number, since it uses less digits than its factorization.

321220141000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17072 (or 17058 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 321220141000 its reverse (141022123), we get a palindrome (321361163123).

The spelling of 321220141000 in words is "three hundred twenty-one billion, two hundred twenty million, one hundred forty-one thousand".