22002351320 has 64 divisors (see below), whose sum is σ = 52546190400. Its totient is φ = 8262881280.

The previous prime is 22002351317. The next prime is 22002351361. The reversal of 22002351320 is 2315320022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22002351292 and 22002351301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238565 + ... + 317675.

It is an arithmetic number, because the mean of its divisors is an integer number (821034225).

Almost surely, 2^22002351320 is an apocalyptic number.

22002351320 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 22002351320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26273095200).

22002351320 is an abundant number, since it is smaller than the sum of its proper divisors (30543839080).

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

22002351320 is a wasteful number, since it uses less digits than its factorization.

22002351320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79548 (or 79544 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 22002351320 its reverse (2315320022), we get a palindrome (24317671342).

The spelling of 22002351320 in words is "twenty-two billion, two million, three hundred fifty-one thousand, three hundred twenty".