11213231100 has 72 divisors (see below), whose sum is σ = 33320502768. Its totient is φ = 2909376000.

The previous prime is 11213231087. The next prime is 11213231111. The reversal of 11213231100 is 113231211.

It is a happy number.

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 11213231100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494001 + ... + 516200.

Almost surely, 2^11213231100 is an apocalyptic number.

11213231100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213231100 is an abundant number, since it is smaller than the sum of its proper divisors (22107271668).

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

11213231100 is a wasteful number, since it uses less digits than its factorization.

11213231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010255 (or 1010248 counting only the distinct ones).

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

Adding to 11213231100 its reverse (113231211), we get a palindrome (11326462311).

The spelling of 11213231100 in words is "eleven billion, two hundred thirteen million, two hundred thirty-one thousand, one hundred".