21242034241 has 8 divisors (see below), whose sum is σ = 21929184000. Its totient is φ = 20555004720.

The previous prime is 21242034227. The next prime is 21242034311. The reversal of 21242034241 is 14243024212.

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-21242034241 is a prime.

It is a super-3 number, since 3×21242034241³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21242032241) 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 7 ways as a sum of consecutive naturals, for example, 451875 + ... + 496663.

It is an arithmetic number, because the mean of its divisors is an integer number (2741148000).

Almost surely, 2^21242034241 is an apocalyptic number.

It is an amenable number.

21242034241 is a deficient number, since it is larger than the sum of its proper divisors (687149759).

21242034241 is a wasteful number, since it uses less digits than its factorization.

21242034241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60119.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21242034241 its reverse (14243024212), we get a palindrome (35485058453).

The spelling of 21242034241 in words is "twenty-one billion, two hundred forty-two million, thirty-four thousand, two hundred forty-one".