21415004241 has 8 divisors (see below), whose sum is σ = 28554630720. Its totient is φ = 14276023632.

The previous prime is 21415004201. The next prime is 21415004269. The reversal of 21415004241 is 14240051412.

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

It is not a de Polignac number, because 21415004241 - 2³¹ = 19267520593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21415004201) 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, 77925 + ... + 221138.

It is an arithmetic number, because the mean of its divisors is an integer number (3569328840).

Almost surely, 2^21415004241 is an apocalyptic number.

It is an amenable number.

21415004241 is a deficient number, since it is larger than the sum of its proper divisors (7139626479).

21415004241 is a wasteful number, since it uses less digits than its factorization.

21415004241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322935.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 21415004241 its reverse (14240051412), we get a palindrome (35655055653).

The spelling of 21415004241 in words is "twenty-one billion, four hundred fifteen million, four thousand, two hundred forty-one".