2322221440 has 128 divisors (see below), whose sum is σ = 6921573120. Its totient is φ = 723793920.

The previous prime is 2322221423. The next prime is 2322221441. The reversal of 2322221440 is 441222232.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2322221441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25719 + ... + 72841.

It is an arithmetic number, because the mean of its divisors is an integer number (54074790).

Almost surely, 2^2322221440 is an apocalyptic number.

2322221440 is a gapful number since it is divisible by the number (20) 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 2322221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3460786560).

2322221440 is an abundant number, since it is smaller than the sum of its proper divisors (4599351680).

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

2322221440 is a wasteful number, since it uses less digits than its factorization.

2322221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47160 (or 47148 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2322221440 is about 48189.4328665528. The cubic root of 2322221440 is about 1324.2435820224.

Adding to 2322221440 its reverse (441222232), we get a palindrome (2763443672).

The spelling of 2322221440 in words is "two billion, three hundred twenty-two million, two hundred twenty-one thousand, four hundred forty".