23121030210100 has 72 divisors (see below), whose sum is σ = 51400945003968. Its totient is φ = 9022035859200.

The previous prime is 23121030210079. The next prime is 23121030210247. The reversal of 23121030210100 is 101203012132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46768809 + ... + 47260591.

It is an arithmetic number, because the mean of its divisors is an integer number (713902013944).

Almost surely, 2^{23121030210100} is an apocalyptic number.

23121030210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121030210100 is an abundant number, since it is smaller than the sum of its proper divisors (28279914793868).

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

23121030210100 is a wasteful number, since it uses less digits than its factorization.

23121030210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503305 (or 503298 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23121030210100 its reverse (101203012132), we get a palindrome (23222233222232).

The spelling of 23121030210100 in words is "twenty-three trillion, one hundred twenty-one billion, thirty million, two hundred ten thousand, one hundred".