11221305320 has 64 divisors (see below), whose sum is σ = 26617489920. Its totient is φ = 4249073664.

The previous prime is 11221305317. The next prime is 11221305349. The reversal of 11221305320 is 2350312211.

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 = 11221305292 and 11221305301.

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, 26369 + ... + 152111.

It is an arithmetic number, because the mean of its divisors is an integer number (415898280).

Almost surely, 2^11221305320 is an apocalyptic number.

11221305320 is a gapful number since it is divisible by the number (10) 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 11221305320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13308744960).

11221305320 is an abundant number, since it is smaller than the sum of its proper divisors (15396184600).

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

11221305320 is a wasteful number, since it uses less digits than its factorization.

11221305320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125874 (or 125870 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 11221305320 its reverse (2350312211), we get a palindrome (13571617531).

The spelling of 11221305320 in words is "eleven billion, two hundred twenty-one million, three hundred five thousand, three hundred twenty".