11213311100 has 72 divisors (see below), whose sum is σ = 25407905040. Its totient is φ = 4290065920.

The previous prime is 11213311099. The next prime is 11213311121. The reversal of 11213311100 is 111331211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292232 + ... + 328368.

It is an arithmetic number, because the mean of its divisors is an integer number (352887570).

Almost surely, 2^11213311100 is an apocalyptic number.

11213311100 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 11213311100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12703952520).

11213311100 is an abundant number, since it is smaller than the sum of its proper divisors (14194593940).

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

11213311100 is a wasteful number, since it uses less digits than its factorization.

11213311100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36287 (or 36280 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11213311100 its reverse (111331211), we get a palindrome (11324642311).

The spelling of 11213311100 in words is "eleven billion, two hundred thirteen million, three hundred eleven thousand, one hundred".