20120112200 has 24 divisors (see below), whose sum is σ = 46779261330. Its totient is φ = 8048044800.

The previous prime is 20120112193. The next prime is 20120112203. The reversal of 20120112200 is 221102102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15075419524 + 5044692676 = 122782^2 + 71026^2 .

It is not an unprimeable number, because it can be changed into a prime (20120112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50300081 + ... + 50300480.

Almost surely, 2^20120112200 is an apocalyptic number.

20120112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120112200 is an abundant number, since it is smaller than the sum of its proper divisors (26659149130).

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

20120112200 is a wasteful number, since it uses less digits than its factorization.

20120112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100600577 (or 100600568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20120112200 its reverse (221102102), we get a palindrome (20341214302).

The spelling of 20120112200 in words is "twenty billion, one hundred twenty million, one hundred twelve thousand, two hundred".