21344024130 has 64 divisors (see below), whose sum is σ = 60181204608. Its totient is φ = 4776284160.

The previous prime is 21344024101. The next prime is 21344024137. The reversal of 21344024130 is 3142044312.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21344024130.

It is not an unprimeable number, because it can be changed into a prime (21344024137) 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, 2483359 + ... + 2491938.

It is an arithmetic number, because the mean of its divisors is an integer number (940331322).

Almost surely, 2^21344024130 is an apocalyptic number.

21344024130 is an abundant number, since it is smaller than the sum of its proper divisors (38837180478).

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

21344024130 is a wasteful number, since it uses less digits than its factorization.

21344024130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975331.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21344024130 its reverse (3142044312), we get a palindrome (24486068442).

The spelling of 21344024130 in words is "twenty-one billion, three hundred forty-four million, twenty-four thousand, one hundred thirty".