320121302000 has 80 divisors (see below), whose sum is σ = 777464337312. Its totient is φ = 127484249600.

The previous prime is 320121301979. The next prime is 320121302009. The reversal of 320121302000 is 203121023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320121302009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101444 + ... + 806556.

Almost surely, 2^320121302000 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 320121302000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388732168656).

320121302000 is an abundant number, since it is smaller than the sum of its proper divisors (457343035312).

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

320121302000 is a wasteful number, since it uses less digits than its factorization.

320121302000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705363 (or 705347 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 320121302000 its reverse (203121023), we get a palindrome (320324423023).

The spelling of 320121302000 in words is "three hundred twenty billion, one hundred twenty-one million, three hundred two thousand".