11012321320 has 256 divisors, whose sum is σ = 33557690880. Its totient is φ = 3166986240.

The previous prime is 11012321311. The next prime is 11012321329. The reversal of 11012321320 is 2312321011.

It is an interprime number because it is at equal distance from previous prime (11012321311) and next prime (11012321329).

It is a junction number, because it is equal to n+sod(n) for n = 11012321294 and 11012321303.

It is not an unprimeable number, because it can be changed into a prime (11012321329) 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 63 ways as a sum of consecutive naturals, for example, 4843704 + ... + 4845976.

It is an arithmetic number, because the mean of its divisors is an integer number (131084730).

Almost surely, 2^11012321320 is an apocalyptic number.

11012321320 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 11012321320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16778845440).

11012321320 is an abundant number, since it is smaller than the sum of its proper divisors (22545369560).

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

11012321320 is a wasteful number, since it uses less digits than its factorization.

11012321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337 (or 2311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11012321320 its reverse (2312321011), we get a palindrome (13324642331).

The spelling of 11012321320 in words is "eleven billion, twelve million, three hundred twenty-one thousand, three hundred twenty".