113013212120 has 64 divisors (see below), whose sum is σ = 259213236480. Its totient is φ = 44334170496.

The previous prime is 113013212113. The next prime is 113013212129. The reversal of 113013212120 is 21212310311.

It is a super-2 number, since 2×113013212120² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113013212129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 515477 + ... + 701243.

It is an arithmetic number, because the mean of its divisors is an integer number (4050206820).

Almost surely, 2^113013212120 is an apocalyptic number.

113013212120 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 113013212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129606618240).

113013212120 is an abundant number, since it is smaller than the sum of its proper divisors (146200024360).

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

113013212120 is a wasteful number, since it uses less digits than its factorization.

113013212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186072 (or 186068 counting only the distinct ones).

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

Adding to 113013212120 its reverse (21212310311), we get a palindrome (134225522431).

The spelling of 113013212120 in words is "one hundred thirteen billion, thirteen million, two hundred twelve thousand, one hundred twenty".