22011321320 has 64 divisors (see below), whose sum is σ = 51502003200. Its totient is φ = 8456331520.

The previous prime is 22011321307. The next prime is 22011321373. The reversal of 22011321320 is 2312311022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171887 + ... + 271233.

It is an arithmetic number, because the mean of its divisors is an integer number (804718800).

Almost surely, 2^22011321320 is an apocalyptic number.

22011321320 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 22011321320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25751001600).

22011321320 is an abundant number, since it is smaller than the sum of its proper divisors (29490681880).

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

22011321320 is a wasteful number, since it uses less digits than its factorization.

22011321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99578 (or 99574 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22011321320 its reverse (2312311022), we get a palindrome (24323632342).

The spelling of 22011321320 in words is "twenty-two billion, eleven million, three hundred twenty-one thousand, three hundred twenty".