21020414441 has 8 divisors (see below), whose sum is σ = 22638532224. Its totient is φ = 19402462800.

The previous prime is 21020414423. The next prime is 21020414453. The reversal of 21020414441 is 14441402012.

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

It is a cyclic number.

It is not a de Polignac number, because 21020414441 - 2³⁰ = 19946672617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020414411) 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, 379010 + ... + 430916.

It is an arithmetic number, because the mean of its divisors is an integer number (2829816528).

Almost surely, 2^21020414441 is an apocalyptic number.

It is an amenable number.

21020414441 is a deficient number, since it is larger than the sum of its proper divisors (1618117783).

21020414441 is a wasteful number, since it uses less digits than its factorization.

21020414441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83071.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 21020414441 its reverse (14441402012), we get a palindrome (35461816453).

The spelling of 21020414441 in words is "twenty-one billion, twenty million, four hundred fourteen thousand, four hundred forty-one".