21240324401335 has 8 divisors (see below), whose sum is σ = 27449034611040. Its totient is φ = 15685162634784.

The previous prime is 21240324401323. The next prime is 21240324401369. The reversal of 21240324401335 is 53310442304212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21240324401335 is a prime.

It is a super-2 number, since 2×21240324401335² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21240324401335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163387110715 + ... + 163387110844.

It is an arithmetic number, because the mean of its divisors is an integer number (3431129326380).

Almost surely, 2^{21240324401335} is an apocalyptic number.

21240324401335 is a deficient number, since it is larger than the sum of its proper divisors (6208710209705).

21240324401335 is a wasteful number, since it uses less digits than its factorization.

21240324401335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326774221577.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 21240324401335 its reverse (53310442304212), we get a palindrome (74550766705547).

The spelling of 21240324401335 in words is "twenty-one trillion, two hundred forty billion, three hundred twenty-four million, four hundred one thousand, three hundred thirty-five".