21324241345 has 8 divisors (see below), whose sum is σ = 27915370560. Its totient is φ = 15508539120.

The previous prime is 21324241319. The next prime is 21324241349. The reversal of 21324241345 is 54314242312.

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

It is not a de Polignac number, because 21324241345 - 2²³ = 21315852737 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 193856685 + ... + 193856794.

It is an arithmetic number, because the mean of its divisors is an integer number (3489421320).

Almost surely, 2^21324241345 is an apocalyptic number.

It is an amenable number.

21324241345 is a deficient number, since it is larger than the sum of its proper divisors (6591129215).

21324241345 is a wasteful number, since it uses less digits than its factorization.

21324241345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387713495.

The product of its digits is 23040, while the sum is 31.

Adding to 21324241345 its reverse (54314242312), we get a palindrome (75638483657).

The spelling of 21324241345 in words is "twenty-one billion, three hundred twenty-four million, two hundred forty-one thousand, three hundred forty-five".