21344424041 has 8 divisors (see below), whose sum is σ = 22848626400. Its totient is φ = 19878302880.

The previous prime is 21344423981. The next prime is 21344424043. The reversal of 21344424041 is 14042444312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21344424041 - 2¹⁰ = 21344423017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21344423995 and 21344424013.

It is not an unprimeable number, because it can be changed into a prime (21344424043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9519140 + ... + 9521381.

It is an arithmetic number, because the mean of its divisors is an integer number (2856078300).

Almost surely, 2^21344424041 is an apocalyptic number.

It is an amenable number.

21344424041 is a deficient number, since it is larger than the sum of its proper divisors (1504202359).

21344424041 is a wasteful number, since it uses less digits than its factorization.

21344424041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19040599.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 21344424041 its reverse (14042444312), we get a palindrome (35386868353).

The spelling of 21344424041 in words is "twenty-one billion, three hundred forty-four million, four hundred twenty-four thousand, forty-one".