21413032241 has 4 divisors (see below), whose sum is σ = 21427205184. Its totient is φ = 21398859300.

The previous prime is 21413032229. The next prime is 21413032247. The reversal of 21413032241 is 14223031412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21413032241 - 2¹⁸ = 21412770097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21413032247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7084205 + ... + 7087226.

It is an arithmetic number, because the mean of its divisors is an integer number (5356801296).

Almost surely, 2^21413032241 is an apocalyptic number.

It is an amenable number.

21413032241 is a deficient number, since it is larger than the sum of its proper divisors (14172943).

21413032241 is a wasteful number, since it uses less digits than its factorization.

21413032241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14172942.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21413032241 its reverse (14223031412), we get a palindrome (35636063653).

The spelling of 21413032241 in words is "twenty-one billion, four hundred thirteen million, thirty-two thousand, two hundred forty-one".