111312130120 has 48 divisors (see below), whose sum is σ = 266051425140. Its totient is φ = 41905738752.

The previous prime is 111312130109. The next prime is 111312130121. The reversal of 111312130120 is 21031213111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 41479839556 + 69832290564 = 203666^2 + 264258^2 .

It is a super-2 number, since 2×111312130120² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111312130094 and 111312130103.

It is not an unprimeable number, because it can be changed into a prime (111312130121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4802979 + ... + 4826098.

Almost surely, 2^111312130120 is an apocalyptic number.

111312130120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111312130120 is an abundant number, since it is smaller than the sum of its proper divisors (154739295020).

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

111312130120 is a wasteful number, since it uses less digits than its factorization.

111312130120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9629122 (or 9629101 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111312130120 its reverse (21031213111), we get a palindrome (132343343231).

The spelling of 111312130120 in words is "one hundred eleven billion, three hundred twelve million, one hundred thirty thousand, one hundred twenty".