21013032441 has 8 divisors (see below), whose sum is σ = 28024545024. Its totient is φ = 14005104080.

The previous prime is 21013032437. The next prime is 21013032449. The reversal of 21013032441 is 14423031012.

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 21013032441 - 2² = 21013032437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21013032449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882345 + ... + 905846.

It is an arithmetic number, because the mean of its divisors is an integer number (3503068128).

Almost surely, 2^21013032441 is an apocalyptic number.

It is an amenable number.

21013032441 is a deficient number, since it is larger than the sum of its proper divisors (7011512583).

21013032441 is a wasteful number, since it uses less digits than its factorization.

21013032441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792111.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21013032441 its reverse (14423031012), we get a palindrome (35436063453).

The spelling of 21013032441 in words is "twenty-one billion, thirteen million, thirty-two thousand, four hundred forty-one".