21441230441 has 16 divisors (see below), whose sum is σ = 21939929088. Its totient is φ = 20947636800.

The previous prime is 21441230423. The next prime is 21441230443. The reversal of 21441230441 is 14403214412.

It is a cyclic number.

It is not a de Polignac number, because 21441230441 - 2¹⁴ = 21441214057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21441230441.

It is not an unprimeable number, because it can be changed into a prime (21441230443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12663791 + ... + 12665483.

It is an arithmetic number, because the mean of its divisors is an integer number (1371245568).

Almost surely, 2^21441230441 is an apocalyptic number.

It is an amenable number.

21441230441 is a deficient number, since it is larger than the sum of its proper divisors (498698647).

21441230441 is a wasteful number, since it uses less digits than its factorization.

21441230441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21441230441 its reverse (14403214412), we get a palindrome (35844444853).

The spelling of 21441230441 in words is "twenty-one billion, four hundred forty-one million, two hundred thirty thousand, four hundred forty-one".