21112004143230 has 512 divisors, whose sum is σ = 70412608143360. Its totient is φ = 3907826657280.

The previous prime is 21112004143213. The next prime is 21112004143297. The reversal of 21112004143230 is 3234140021112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112004143230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2131013937 + ... + 2131023843.

It is an arithmetic number, because the mean of its divisors is an integer number (137524625280).

Almost surely, 2^{21112004143230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112004143230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35206304071680).

21112004143230 is an abundant number, since it is smaller than the sum of its proper divisors (49300604000130).

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

21112004143230 is a wasteful number, since it uses less digits than its factorization.

21112004143230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424.

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

Adding to 21112004143230 its reverse (3234140021112), we get a palindrome (24346144164342).

The spelling of 21112004143230 in words is "twenty-one trillion, one hundred twelve billion, four million, one hundred forty-three thousand, two hundred thirty".