4243222321320 has 256 divisors, whose sum is σ = 13531183488000. Its totient is φ = 1062457675776.

The previous prime is 4243222321319. The next prime is 4243222321363. The reversal of 4243222321320 is 231232223424.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 306828166 + ... + 306841994.

It is an arithmetic number, because the mean of its divisors is an integer number (52856185500).

Almost surely, 2^{4243222321320} is an apocalyptic number.

4243222321320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4243222321320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6765591744000).

4243222321320 is an abundant number, since it is smaller than the sum of its proper divisors (9287961166680).

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

4243222321320 is a wasteful number, since it uses less digits than its factorization.

4243222321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16292 (or 16288 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 4243222321320 its reverse (231232223424), we get a palindrome (4474454544744).

The spelling of 4243222321320 in words is "four trillion, two hundred forty-three billion, two hundred twenty-two million, three hundred twenty-one thousand, three hundred twenty".