20130123130206 has 16 divisors (see below), whose sum is σ = 40299989852304. Its totient is φ = 6703417111424.

The previous prime is 20130123130151. The next prime is 20130123130207. The reversal of 20130123130206 is 60203132103102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130123130207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655976411 + ... + 1655988566.

It is an arithmetic number, because the mean of its divisors is an integer number (2518749365769).

Almost surely, 2^{20130123130206} is an apocalyptic number.

20130123130206 is an abundant number, since it is smaller than the sum of its proper divisors (20169866722098).

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

20130123130206 is a wasteful number, since it uses less digits than its factorization.

20130123130206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311965995.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20130123130206 its reverse (60203132103102), we get a palindrome (80333255233308).

The spelling of 20130123130206 in words is "twenty trillion, one hundred thirty billion, one hundred twenty-three million, one hundred thirty thousand, two hundred six".