20123130133230 has 64 divisors (see below), whose sum is σ = 49563898368768. Its totient is φ = 5225714807040.

The previous prime is 20123130133229. The next prime is 20123130133247. The reversal of 20123130133230 is 3233103132102.

It is a self number, because there is not a number n which added to its sum of digits gives 20123130133230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14281732 + ... + 15627351.

It is an arithmetic number, because the mean of its divisors is an integer number (774435912012).

Almost surely, 2^{20123130133230} is an apocalyptic number.

20123130133230 is an abundant number, since it is smaller than the sum of its proper divisors (29440768235538).

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

20123130133230 is a wasteful number, since it uses less digits than its factorization.

20123130133230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29909681.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 20123130133230 its reverse (3233103132102), we get a palindrome (23356233265332).

The spelling of 20123130133230 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty million, one hundred thirty-three thousand, two hundred thirty".