21344244130 has 96 divisors (see below), whose sum is σ = 44390462400. Its totient is φ = 7327117440.

The previous prime is 21344244127. The next prime is 21344244139. The reversal of 21344244130 is 3144244312.

It is not an unprimeable number, because it can be changed into a prime (21344244139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13778596 + ... + 13780144.

It is an arithmetic number, because the mean of its divisors is an integer number (462400650).

Almost surely, 2^21344244130 is an apocalyptic number.

21344244130 is an abundant number, since it is smaller than the sum of its proper divisors (23046218270).

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

21344244130 is a wasteful number, since it uses less digits than its factorization.

21344244130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1933 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21344244130 its reverse (3144244312), we get a palindrome (24488488442).

The spelling of 21344244130 in words is "twenty-one billion, three hundred forty-four million, two hundred forty-four thousand, one hundred thirty".