20113110203120 has 160 divisors (see below), whose sum is σ = 52105447895040. Its totient is φ = 7157436549120.

The previous prime is 20113110203119. The next prime is 20113110203129. The reversal of 20113110203120 is 2130201131102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113110203129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459611801 + ... + 459655559.

It is an arithmetic number, because the mean of its divisors is an integer number (325659049344).

Almost surely, 2^{20113110203120} is an apocalyptic number.

20113110203120 is a gapful number since it is divisible by the number (20) 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 20113110203120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26052723947520).

20113110203120 is an abundant number, since it is smaller than the sum of its proper divisors (31992337691920).

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

20113110203120 is a wasteful number, since it uses less digits than its factorization.

20113110203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54943 (or 54937 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20113110203120 its reverse (2130201131102), we get a palindrome (22243311334222).

The spelling of 20113110203120 in words is "twenty trillion, one hundred thirteen billion, one hundred ten million, two hundred three thousand, one hundred twenty".