21424211013304 has 128 divisors (see below), whose sum is σ = 44741014200000. Its totient is φ = 9536079974400.

The previous prime is 21424211013301. The next prime is 21424211013347. The reversal of 21424211013304 is 40331011242412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21424211013301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3083060422 + ... + 3083067370.

Almost surely, 2^{21424211013304} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21424211013304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22370507100000).

21424211013304 is an abundant number, since it is smaller than the sum of its proper divisors (23316803186696).

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

21424211013304 is a wasteful number, since it uses less digits than its factorization.

21424211013304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409 (or 10405 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21424211013304 its reverse (40331011242412), we get a palindrome (61755222255716).

The spelling of 21424211013304 in words is "twenty-one trillion, four hundred twenty-four billion, two hundred eleven million, thirteen thousand, three hundred four".