21441032441 has 4 divisors (see below), whose sum is σ = 21441743232. Its totient is φ = 21440321652.

The previous prime is 21441032419. The next prime is 21441032443. The reversal of 21441032441 is 14423014412.

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 21441032441 - 2³⁰ = 20367290617 is a prime.

It is a super-3 number, since 3×21441032441³ (a number of 32 digits) contains 333 as substring.

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 21441032441.

It is not an unprimeable number, because it can be changed into a prime (21441032443) 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, 308045 + ... + 371178.

It is an arithmetic number, because the mean of its divisors is an integer number (5360435808).

Almost surely, 2^21441032441 is an apocalyptic number.

It is an amenable number.

21441032441 is a deficient number, since it is larger than the sum of its proper divisors (710791).

21441032441 is an equidigital number, since it uses as much as digits as its factorization.

21441032441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710790.

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

Adding to 21441032441 its reverse (14423014412), we get a palindrome (35864046853).

The spelling of 21441032441 in words is "twenty-one billion, four hundred forty-one million, thirty-two thousand, four hundred forty-one".