21324241346 has 8 divisors (see below), whose sum is σ = 33867912780. Its totient is φ = 10034937088.

The previous prime is 21324241319. The next prime is 21324241349. The reversal of 21324241346 is 64314242312.

It can be written as a sum of positive squares in 2 ways, for example, as 20085975625 + 1238265721 = 141725^2 + 35189^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21324241349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313591751 + ... + 313591818.

Almost surely, 2^21324241346 is an apocalyptic number.

21324241346 is a deficient number, since it is larger than the sum of its proper divisors (12543671434).

21324241346 is a wasteful number, since it uses less digits than its factorization.

21324241346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627183588.

The product of its digits is 27648, while the sum is 32.

Adding to 21324241346 its reverse (64314242312), we get a palindrome (85638483658).

The spelling of 21324241346 in words is "twenty-one billion, three hundred twenty-four million, two hundred forty-one thousand, three hundred forty-six".