22001030320 has 20 divisors (see below), whose sum is σ = 51152395680. Its totient is φ = 8800412096.

The previous prime is 22001030309. The next prime is 22001030323. The reversal of 22001030320 is 2303010022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 22001030320.

It is not an unprimeable number, because it can be changed into a prime (22001030323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137506360 + ... + 137506519.

It is an arithmetic number, because the mean of its divisors is an integer number (2557619784).

Almost surely, 2^22001030320 is an apocalyptic number.

22001030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001030320 is an abundant number, since it is smaller than the sum of its proper divisors (29151365360).

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

22001030320 is a wasteful number, since it uses less digits than its factorization.

22001030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275012892 (or 275012886 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 22001030320 its reverse (2303010022), we get a palindrome (24304040342).

The spelling of 22001030320 in words is "twenty-two billion, one million, thirty thousand, three hundred twenty".