113321203112 has 128 divisors (see below), whose sum is σ = 243645494400. Its totient is φ = 48980505600.

The previous prime is 113321203081. The next prime is 113321203133. The reversal of 113321203112 is 211302123311.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 82056662 + ... + 82058042.

It is an arithmetic number, because the mean of its divisors is an integer number (1903480425).

Almost surely, 2^113321203112 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 113321203112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121822747200).

113321203112 is an abundant number, since it is smaller than the sum of its proper divisors (130324291288).

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

113321203112 is a wasteful number, since it uses less digits than its factorization.

113321203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113321203112 its reverse (211302123311), we get a palindrome (324623326423).

The spelling of 113321203112 in words is "one hundred thirteen billion, three hundred twenty-one million, two hundred three thousand, one hundred twelve".