21305424410041 has 4 divisors (see below), whose sum is σ = 21307397328000. Its totient is φ = 21303451492084.

The previous prime is 21305424410029. The next prime is 21305424410071. The reversal of 21305424410041 is 14001442450312.

It is a happy number.

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 21305424410041 - 2²³ = 21305416021433 is a prime.

It is a super-2 number, since 2×21305424410041² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21305424409985 and 21305424410012.

It is not an unprimeable number, because it can be changed into a prime (21305424410071) 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, 986442781 + ... + 986464378.

It is an arithmetic number, because the mean of its divisors is an integer number (5326849332000).

Almost surely, 2^{21305424410041} is an apocalyptic number.

It is an amenable number.

21305424410041 is a deficient number, since it is larger than the sum of its proper divisors (1972917959).

21305424410041 is a wasteful number, since it uses less digits than its factorization.

21305424410041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972917958.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 21305424410041 its reverse (14001442450312), we get a palindrome (35306866860353).

The spelling of 21305424410041 in words is "twenty-one trillion, three hundred five billion, four hundred twenty-four million, four hundred ten thousand, forty-one".