2123130204 has 240 divisors, whose sum is σ = 6403320000. Its totient is φ = 607647744.

The previous prime is 2123130179. The next prime is 2123130209. The reversal of 2123130204 is 4020313212.

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 (2123130209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10668897 + ... + 10669095.

It is an arithmetic number, because the mean of its divisors is an integer number (26680500).

Almost surely, 2^2123130204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123130204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3201660000).

2123130204 is an abundant number, since it is smaller than the sum of its proper divisors (4280189796).

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

2123130204 is a wasteful number, since it uses less digits than its factorization.

2123130204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2123130204 is about 46077.4370380992. The cubic root of 2123130204 is about 1285.2636045175.

Adding to 2123130204 its reverse (4020313212), we get a palindrome (6143443416).

The spelling of 2123130204 in words is "two billion, one hundred twenty-three million, one hundred thirty thousand, two hundred four".