20130123130112 has 18 divisors (see below), whose sum is σ = 40181612967258. Its totient is φ = 10065061564928.

The previous prime is 20130123130067. The next prime is 20130123130121. The reversal of 20130123130112 is 21103132103102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13921972838656 + 6208150291456 = 3731216^2 + 2491616^2 .

It is a super-2 number, since 2×20130123130112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39316646483 + ... + 39316646994.

Almost surely, 2^{20130123130112} is an apocalyptic number.

It is an amenable number.

20130123130112 is a deficient number, since it is larger than the sum of its proper divisors (20051489837146).

20130123130112 is an frugal number, since it uses more digits than its factorization.

20130123130112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78633293493 (or 78633293479 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20130123130112 its reverse (21103132103102), we get a palindrome (41233255233214).

The spelling of 20130123130112 in words is "twenty trillion, one hundred thirty billion, one hundred twenty-three million, one hundred thirty thousand, one hundred twelve".