21100023130000 has 200 divisors, whose sum is σ = 53425348416000. Its totient is φ = 8055032832000.

The previous prime is 21100023129979. The next prime is 21100023130033. The reversal of 21100023130000 is 3132000112.

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

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, 103167841 + ... + 103372159.

It is an arithmetic number, because the mean of its divisors is an integer number (267126742080).

Almost surely, 2^{21100023130000} is an apocalyptic number.

21100023130000 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 21100023130000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26712674208000).

21100023130000 is an abundant number, since it is smaller than the sum of its proper divisors (32325325286000).

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

21100023130000 is a wasteful number, since it uses less digits than its factorization.

21100023130000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204819 (or 204798 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21100023130000 its reverse (3132000112), we get a palindrome (21103155130112).

The spelling of 21100023130000 in words is "twenty-one trillion, one hundred billion, twenty-three million, one hundred thirty thousand".