4021243421322 has 48 divisors (see below), whose sum is σ = 8688206639520. Its totient is φ = 1240184047872.

The previous prime is 4021243421207. The next prime is 4021243421323. The reversal of 4021243421322 is 2231243421204.

It is a self number, because there is not a number n which added to its sum of digits gives 4021243421322.

It is not an unprimeable number, because it can be changed into a prime (4021243421323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19550713 + ... + 19755324.

It is an arithmetic number, because the mean of its divisors is an integer number (181004304990).

Almost surely, 2^{4021243421322} is an apocalyptic number.

4021243421322 is an abundant number, since it is smaller than the sum of its proper divisors (4666963218198).

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

4021243421322 is a wasteful number, since it uses less digits than its factorization.

4021243421322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39306135 (or 39306118 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 4021243421322 its reverse (2231243421204), we get a palindrome (6252486842526).

The spelling of 4021243421322 in words is "four trillion, twenty-one billion, two hundred forty-three million, four hundred twenty-one thousand, three hundred twenty-two".