23121211102110 has 256 divisors, whose sum is σ = 68897473413120. Its totient is φ = 5469099108480.

The previous prime is 23121211102013. The next prime is 23121211102147. The reversal of 23121211102110 is 1120111212132.

It is a happy number.

23121211102110 is a `hidden beast` number, since 231 + 2 + 1 + 211 + 10 + 211 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 123401959 + ... + 123589181.

It is an arithmetic number, because the mean of its divisors is an integer number (269130755520).

Almost surely, 2^{23121211102110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121211102110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34448736706560).

23121211102110 is an abundant number, since it is smaller than the sum of its proper divisors (45776262311010).

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

23121211102110 is a wasteful number, since it uses less digits than its factorization.

23121211102110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188260 (or 188254 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 23121211102110 its reverse (1120111212132), we get a palindrome (24241322314242).

The spelling of 23121211102110 in words is "twenty-three trillion, one hundred twenty-one billion, two hundred eleven million, one hundred two thousand, one hundred ten".