1123030113012 has 18 divisors (see below), whose sum is σ = 2838770563538. Its totient is φ = 374343370992.

The previous prime is 1123030113001. The next prime is 1123030113017. The reversal of 1123030113012 is 2103110303211.

1123030113012 is a `hidden beast` number, since 1 + 1 + 230 + 301 + 130 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 734507277156 + 388522835856 = 857034^2 + 623316^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1123030113012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123030113017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15597640423 + ... + 15597640494.

Almost surely, 2^{1123030113012} is an apocalyptic number.

1123030113012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1123030113012 is an abundant number, since it is smaller than the sum of its proper divisors (1715740450526).

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

1123030113012 is a wasteful number, since it uses less digits than its factorization.

1123030113012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31195280927 (or 31195280922 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1123030113012 its reverse (2103110303211), we get a palindrome (3226140416223).

The spelling of 1123030113012 in words is "one trillion, one hundred twenty-three billion, thirty million, one hundred thirteen thousand, twelve".