11331212100 has 72 divisors (see below), whose sum is σ = 35306906880. Its totient is φ = 2789220480.

The previous prime is 11331212099. The next prime is 11331212111. The reversal of 11331212100 is 121213311.

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 11331212100.

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, 1448820 + ... + 1456619.

Almost surely, 2^11331212100 is an apocalyptic number.

11331212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11331212100 is an abundant number, since it is smaller than the sum of its proper divisors (23975694780).

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

11331212100 is a wasteful number, since it uses less digits than its factorization.

11331212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905469 (or 2905462 counting only the distinct ones).

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

Adding to 11331212100 its reverse (121213311), we get a palindrome (11452425411).

The spelling of 11331212100 in words is "eleven billion, three hundred thirty-one million, two hundred twelve thousand, one hundred".