21043101044130 has 128 divisors (see below), whose sum is σ = 56455623254016. Its totient is φ = 4975418918400.

The previous prime is 21043101044117. The next prime is 21043101044153. The reversal of 21043101044130 is 3144010134012.

It is a self number, because there is not a number n which added to its sum of digits gives 21043101044130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44508559 + ... + 44978861.

It is an arithmetic number, because the mean of its divisors is an integer number (441059556672).

Almost surely, 2^{21043101044130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21043101044130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28227811627008).

21043101044130 is an abundant number, since it is smaller than the sum of its proper divisors (35412522209886).

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

21043101044130 is a wasteful number, since it uses less digits than its factorization.

21043101044130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473672.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21043101044130 its reverse (3144010134012), we get a palindrome (24187111178142).

The spelling of 21043101044130 in words is "twenty-one trillion, forty-three billion, one hundred one million, forty-four thousand, one hundred thirty".