21344023130 has 64 divisors (see below), whose sum is σ = 40490392320. Its totient is φ = 8090150400.

The previous prime is 21344023033. The next prime is 21344023139. The reversal of 21344023130 is 3132044312.

It is a junction number, because it is equal to n+sod(n) for n = 21344023096 and 21344023105.

It is not an unprimeable number, because it can be changed into a prime (21344023139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13940465 + ... + 13941995.

It is an arithmetic number, because the mean of its divisors is an integer number (632662380).

Almost surely, 2^21344023130 is an apocalyptic number.

21344023130 is a deficient number, since it is larger than the sum of its proper divisors (19146369190).

21344023130 is a wasteful number, since it uses less digits than its factorization.

21344023130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21344023130 its reverse (3132044312), we get a palindrome (24476067442).

The spelling of 21344023130 in words is "twenty-one billion, three hundred forty-four million, twenty-three thousand, one hundred thirty".