113121213303320 has 128 divisors (see below), whose sum is σ = 260132947338240. Its totient is φ = 44261061672960.

The previous prime is 113121213303317. The next prime is 113121213303337. The reversal of 113121213303320 is 23303312121311.

It is a self number, because there is not a number n which added to its sum of digits gives 113121213303320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503564225 + ... + 503788815.

It is an arithmetic number, because the mean of its divisors is an integer number (2032288651080).

Almost surely, 2^{113121213303320} is an apocalyptic number.

113121213303320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113121213303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130066473669120).

113121213303320 is an abundant number, since it is smaller than the sum of its proper divisors (147011734034920).

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

113121213303320 is a wasteful number, since it uses less digits than its factorization.

113121213303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225985 (or 225981 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 113121213303320 its reverse (23303312121311), we get a palindrome (136424525424631).

The spelling of 113121213303320 in words is "one hundred thirteen trillion, one hundred twenty-one billion, two hundred thirteen million, three hundred three thousand, three hundred twenty".