12111122200 has 24 divisors (see below), whose sum is σ = 28158359580. Its totient is φ = 4844448800.

The previous prime is 12111122189. The next prime is 12111122203. The reversal of 12111122200 is 222111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111122203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30277606 + ... + 30278005.

Almost surely, 2^12111122200 is an apocalyptic number.

12111122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111122200 is an abundant number, since it is smaller than the sum of its proper divisors (16047237380).

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

12111122200 is a wasteful number, since it uses less digits than its factorization.

12111122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60555627 (or 60555618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12111122200 its reverse (222111121), we get a palindrome (12333233321).

The spelling of 12111122200 in words is "twelve billion, one hundred eleven million, one hundred twenty-two thousand, two hundred".