23121121010200 has 192 divisors, whose sum is σ = 57465580896000. Its totient is φ = 8626449600000.

The previous prime is 23121121010149. The next prime is 23121121010213. The reversal of 23121121010200 is 201012112132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68531925 + ... + 68868475.

It is an arithmetic number, because the mean of its divisors is an integer number (299299900500).

Almost surely, 2^{23121121010200} is an apocalyptic number.

23121121010200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121121010200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28732790448000).

23121121010200 is an abundant number, since it is smaller than the sum of its proper divisors (34344459885800).

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

23121121010200 is a wasteful number, since it uses less digits than its factorization.

23121121010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336866 (or 336857 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 23121121010200 its reverse (201012112132), we get a palindrome (23322133122332).

The spelling of 23121121010200 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred twenty-one million, ten thousand, two hundred".