23121034020100 has 72 divisors (see below), whose sum is σ = 54042904032768. Its totient is φ = 8560943846400.

The previous prime is 23121034020043. The next prime is 23121034020109. The reversal of 23121034020100 is 102043012132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23121034020109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162067789 + ... + 162210388.

It is an arithmetic number, because the mean of its divisors is an integer number (750595889344).

Almost surely, 2^{23121034020100} is an apocalyptic number.

23121034020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121034020100 is an abundant number, since it is smaller than the sum of its proper divisors (30921870012668).

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

23121034020100 is a wasteful number, since it uses less digits than its factorization.

23121034020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324278245 (or 324278238 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23121034020100 its reverse (102043012132), we get a palindrome (23223077032232).

The spelling of 23121034020100 in words is "twenty-three trillion, one hundred twenty-one billion, thirty-four million, twenty thousand, one hundred".