113321213312 has 64 divisors (see below), whose sum is σ = 231684546240. Its totient is φ = 55177973760.

The previous prime is 113321213303. The next prime is 113321213339. The reversal of 113321213312 is 213312123311.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2903753 + ... + 2942519.

It is an arithmetic number, because the mean of its divisors is an integer number (3620071035).

Almost surely, 2^113321213312 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 113321213312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115842273120).

113321213312 is an abundant number, since it is smaller than the sum of its proper divisors (118363332928).

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

113321213312 is an equidigital number, since it uses as much as digits as its factorization.

113321213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39379 (or 39367 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 113321213312 its reverse (213312123311), we get a palindrome (326633336623).

Subtracting 113321213312 from its reverse (213312123311), we obtain a palindrome (99990909999).

The spelling of 113321213312 in words is "one hundred thirteen billion, three hundred twenty-one million, two hundred thirteen thousand, three hundred twelve".