4021323430220 has 144 divisors (see below), whose sum is σ = 9338559310080. Its totient is φ = 1450984964352.

The previous prime is 4021323430213. The next prime is 4021323430237. The reversal of 4021323430220 is 220343231204.

4021323430220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 4021323430220.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16514111 + ... + 16755849.

It is an arithmetic number, because the mean of its divisors is an integer number (64851106320).

Almost surely, 2^{4021323430220} 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 4021323430220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4669279655040).

4021323430220 is an abundant number, since it is smaller than the sum of its proper divisors (5317235879860).

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

4021323430220 is a wasteful number, since it uses less digits than its factorization.

4021323430220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241872 (or 241841 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 4021323430220 its reverse (220343231204), we get a palindrome (4241666661424).

The spelling of 4021323430220 in words is "four trillion, twenty-one billion, three hundred twenty-three million, four hundred thirty thousand, two hundred twenty".