21443103440130 has 128 divisors (see below), whose sum is σ = 55838272928256. Its totient is φ = 5248792985600.

The previous prime is 21443103440117. The next prime is 21443103440149. The reversal of 21443103440130 is 3104430134412.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 63418699 + ... + 63755921.

It is an arithmetic number, because the mean of its divisors is an integer number (436236507252).

Almost surely, 2^{21443103440130} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21443103440130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27919136464128).

21443103440130 is an abundant number, since it is smaller than the sum of its proper divisors (34395169488126).

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

21443103440130 is a wasteful number, since it uses less digits than its factorization.

21443103440130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340332.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21443103440130 its reverse (3104430134412), we get a palindrome (24547533574542).

The spelling of 21443103440130 in words is "twenty-one trillion, four hundred forty-three billion, one hundred three million, four hundred forty thousand, one hundred thirty".