23121113510000 has 200 divisors, whose sum is σ = 61129894472064. Its totient is φ = 8399085280000.

The previous prime is 23121113509927. The next prime is 23121113510059. The reversal of 23121113510000 is 1531112132.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 108023087 + ... + 108236913.

Almost surely, 2^{23121113510000} is an apocalyptic number.

23121113510000 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 23121113510000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30564947236032).

23121113510000 is an abundant number, since it is smaller than the sum of its proper divisors (38008780962064).

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

23121113510000 is a wasteful number, since it uses less digits than its factorization.

23121113510000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214849 (or 214828 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 23121113510000 its reverse (1531112132), we get a palindrome (23122644622132).

The spelling of 23121113510000 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred thirteen million, five hundred ten thousand".