20001332123130 has 16 divisors (see below), whose sum is σ = 48003197095584. Its totient is φ = 5333688566160.

The previous prime is 20001332123077. The next prime is 20001332123131. The reversal of 20001332123130 is 3132123310002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20001332123097 and 20001332123106.

It is not an unprimeable number, because it can be changed into a prime (20001332123131) 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, 333355535356 + ... + 333355535415.

It is an arithmetic number, because the mean of its divisors is an integer number (3000199818474).

Almost surely, 2^{20001332123130} is an apocalyptic number.

20001332123130 is an abundant number, since it is smaller than the sum of its proper divisors (28001864972454).

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

20001332123130 is a wasteful number, since it uses less digits than its factorization.

20001332123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666711070781.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20001332123130 its reverse (3132123310002), we get a palindrome (23133455433132).

The spelling of 20001332123130 in words is "twenty trillion, one billion, three hundred thirty-two million, one hundred twenty-three thousand, one hundred thirty".