321010043332420 has 96 divisors (see below), whose sum is σ = 742997263776768. Its totient is φ = 115748915369472.

The previous prime is 321010043332399. The next prime is 321010043332423. The reversal of 321010043332420 is 24233340010123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321010043332423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57795102 + ... + 63105418.

It is an arithmetic number, because the mean of its divisors is an integer number (7739554831008).

Almost surely, 2^{321010043332420} 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 321010043332420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371498631888384).

321010043332420 is an abundant number, since it is smaller than the sum of its proper divisors (421987220444348).

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

321010043332420 is a wasteful number, since it uses less digits than its factorization.

321010043332420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315789 (or 5315787 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 321010043332420 its reverse (24233340010123), we get a palindrome (345243383342543).

The spelling of 321010043332420 in words is "three hundred twenty-one trillion, ten billion, forty-three million, three hundred thirty-two thousand, four hundred twenty".