112121212200 has 48 divisors (see below), whose sum is σ = 347575759680. Its totient is φ = 29898989760.

The previous prime is 112121212187. The next prime is 112121212201. The reversal of 112121212200 is 2212121211.

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 112121212200.

It is not an unprimeable number, because it can be changed into a prime (112121212201) 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 11 ways as a sum of consecutive naturals, for example, 93433744 + ... + 93434943.

It is an arithmetic number, because the mean of its divisors is an integer number (7241161660).

Almost surely, 2^112121212200 is an apocalyptic number.

112121212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121212200 is an abundant number, since it is smaller than the sum of its proper divisors (235454547480).

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

112121212200 is a wasteful number, since it uses less digits than its factorization.

112121212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186868706 (or 186868697 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 112121212200 its reverse (2212121211), we get a palindrome (114333333411).

The spelling of 112121212200 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, two hundred".