1123130112 has 288 divisors, whose sum is σ = 3455897088. Its totient is φ = 321159168.

The previous prime is 1123130087. The next prime is 1123130119. The reversal of 1123130112 is 2110313211.

It is a happy number.

It is a super-2 number, since 2×1123130112² = 2522842496962265088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123130091 and 1123130100.

It is not an unprimeable number, because it can be changed into a prime (1123130119) 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, 15385308 + ... + 15385380.

Almost surely, 2^1123130112 is an apocalyptic number.

1123130112 is a gapful number since it is divisible by the number (12) 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 1123130112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727948544).

1123130112 is an abundant number, since it is smaller than the sum of its proper divisors (2332766976).

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

1123130112 is a wasteful number, since it uses less digits than its factorization.

1123130112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1123130112 is about 33513.1334255691. The cubic root of 1123130112 is about 1039.4653662331.

Adding to 1123130112 its reverse (2110313211), we get a palindrome (3233443323).

The spelling of 1123130112 in words is "one billion, one hundred twenty-three million, one hundred thirty thousand, one hundred twelve".