12113212212100 has 36 divisors (see below), whose sum is σ = 26437610829924. Its totient is φ = 4817277450880.

The previous prime is 12113212212097. The next prime is 12113212212139. The reversal of 12113212212100 is 121221231121.

It can be written as a sum of positive squares in 6 ways, for example, as 2678583943044 + 9434628269056 = 1636638^2 + 3071584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350075539 + ... + 350110138.

It is an arithmetic number, because the mean of its divisors is an integer number (734378078609).

Almost surely, 2^{12113212212100} is an apocalyptic number.

12113212212100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113212212100 is an abundant number, since it is smaller than the sum of its proper divisors (14324398617824).

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

12113212212100 is a wasteful number, since it uses less digits than its factorization.

12113212212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700185864 (or 700185857 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12113212212100 its reverse (121221231121), we get a palindrome (12234433443221).

The spelling of 12113212212100 in words is "twelve trillion, one hundred thirteen billion, two hundred twelve million, two hundred twelve thousand, one hundred".