21010103323110 has 128 divisors (see below), whose sum is σ = 61130104358400. Its totient is φ = 5092541400960.

The previous prime is 21010103323037. The next prime is 21010103323127. The reversal of 21010103323110 is 1132330101012.

21010103323110 is a `hidden beast` number, since 2 + 1 + 0 + 10 + 10 + 332 + 311 + 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 63 ways as a sum of consecutive naturals, for example, 18054717 + ... + 19183143.

It is an arithmetic number, because the mean of its divisors is an integer number (477578940300).

Almost surely, 2^{21010103323110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21010103323110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30565052179200).

21010103323110 is an abundant number, since it is smaller than the sum of its proper divisors (40120001035290).

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

21010103323110 is a wasteful number, since it uses less digits than its factorization.

21010103323110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134723 (or 1134717 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21010103323110 its reverse (1132330101012), we get a palindrome (22142433424122).

The spelling of 21010103323110 in words is "twenty-one trillion, ten billion, one hundred three million, three hundred twenty-three thousand, one hundred ten".