113312111212112 has 80 divisors (see below), whose sum is σ = 227743910064000. Its totient is φ = 54550378885632.

The previous prime is 113312111212087. The next prime is 113312111212121. The reversal of 113312111212112 is 211212111213311.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2190892589 + ... + 2190944307.

It is an arithmetic number, because the mean of its divisors is an integer number (2846798875800).

Almost surely, 2^{113312111212112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113312111212112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113871955032000).

113312111212112 is an abundant number, since it is smaller than the sum of its proper divisors (114431798851888).

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

113312111212112 is a wasteful number, since it uses less digits than its factorization.

113312111212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64788 (or 64782 counting only the distinct ones).

The product of its digits is 144, while the sum is 23.

Adding to 113312111212112 its reverse (211212111213311), we get a palindrome (324524222425423).

The spelling of 113312111212112 in words is "one hundred thirteen trillion, three hundred twelve billion, one hundred eleven million, two hundred twelve thousand, one hundred twelve".