11212222200 has 96 divisors (see below), whose sum is σ = 35276789760. Its totient is φ = 2945289600.

The previous prime is 11212222159. The next prime is 11212222207. The reversal of 11212222200 is 222221211.

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 11212222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212222207) by changing a digit.

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, 99256 + ... + 179655.

It is an arithmetic number, because the mean of its divisors is an integer number (367466560).

Almost surely, 2^11212222200 is an apocalyptic number.

11212222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212222200 is an abundant number, since it is smaller than the sum of its proper divisors (24064567560).

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

11212222200 is a wasteful number, since it uses less digits than its factorization.

11212222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278997 (or 278988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11212222200 its reverse (222221211), we get a palindrome (11434443411).

The spelling of 11212222200 in words is "eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred".