11213111320 has 64 divisors (see below), whose sum is σ = 25989919200. Its totient is φ = 4351288320.

The previous prime is 11213111309. The next prime is 11213111387. The reversal of 11213111320 is 2311131211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11213111294 and 11213111303.

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, 274462 + ... + 312658.

Almost surely, 2^11213111320 is an apocalyptic number.

11213111320 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 11213111320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12994959600).

11213111320 is an abundant number, since it is smaller than the sum of its proper divisors (14776807880).

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

11213111320 is a wasteful number, since it uses less digits than its factorization.

11213111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38428 (or 38424 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11213111320 its reverse (2311131211), we get a palindrome (13524242531).

The spelling of 11213111320 in words is "eleven billion, two hundred thirteen million, one hundred eleven thousand, three hundred twenty".