21010123301130 has 96 divisors (see below), whose sum is σ = 55307668014144. Its totient is φ = 5533065151488.

The previous prime is 21010123301071. The next prime is 21010123301159. The reversal of 21010123301130 is 3110332101012.

21010123301130 is a `hidden beast` number, since 210 + 1 + 0 + 1 + 23 + 301 + 130 = 666.

It is a super-2 number, since 2×21010123301130² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1500189 + ... + 6653631.

It is an arithmetic number, because the mean of its divisors is an integer number (576121541814).

Almost surely, 2^{21010123301130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21010123301130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27653834007072).

21010123301130 is an abundant number, since it is smaller than the sum of its proper divisors (34297544713014).

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

21010123301130 is a wasteful number, since it uses less digits than its factorization.

21010123301130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154020 (or 5154017 counting only the distinct ones).

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

Adding to 21010123301130 its reverse (3110332101012), we get a palindrome (24120455402142).

The spelling of 21010123301130 in words is "twenty-one trillion, ten billion, one hundred twenty-three million, three hundred one thousand, one hundred thirty".