11211130320 has 80 divisors (see below), whose sum is σ = 37427937792. Its totient is φ = 2759662080.

The previous prime is 11211130243. The next prime is 11211130361. The reversal of 11211130320 is 2303111211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11211130320.

It is a congruent number.

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, 1793536 + ... + 1799775.

Almost surely, 2^11211130320 is an apocalyptic number.

11211130320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211130320 is an abundant number, since it is smaller than the sum of its proper divisors (26216807472).

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

11211130320 is a wasteful number, since it uses less digits than its factorization.

11211130320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593340 (or 3593334 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11211130320 its reverse (2303111211), we get a palindrome (13514241531).

The spelling of 11211130320 in words is "eleven billion, two hundred eleven million, one hundred thirty thousand, three hundred twenty".