11211313320 has 48 divisors (see below), whose sum is σ = 36436769460. Its totient is φ = 2989683456.

The previous prime is 11211313297. The next prime is 11211313327. The reversal of 11211313320 is 2331311211.

11211313320 is a `hidden beast` number, since 11 + 21 + 1 + 313 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11193216804 + 18096516 = 105798^2 + 4254^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11211313293 and 11211313302.

It is not an unprimeable number, because it can be changed into a prime (11211313327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15570909 + ... + 15571628.

Almost surely, 2^11211313320 is an apocalyptic number.

11211313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211313320 is an abundant number, since it is smaller than the sum of its proper divisors (25225456140).

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

11211313320 is a wasteful number, since it uses less digits than its factorization.

11211313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31142554 (or 31142547 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11211313320 its reverse (2331311211), we get a palindrome (13542624531).

The spelling of 11211313320 in words is "eleven billion, two hundred eleven million, three hundred thirteen thousand, three hundred twenty".