21110443041 has 8 divisors (see below), whose sum is σ = 28175895360. Its totient is φ = 14059309712.

The previous prime is 21110443037. The next prime is 21110443051. The reversal of 21110443041 is 14034401112.

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 21110443041 - 2² = 21110443037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110442999 and 21110443017.

It is not an unprimeable number, because it can be changed into a prime (21110443051) 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, 3576306 + ... + 3582203.

It is an arithmetic number, because the mean of its divisors is an integer number (3521986920).

Almost surely, 2^21110443041 is an apocalyptic number.

It is an amenable number.

21110443041 is a deficient number, since it is larger than the sum of its proper divisors (7065452319).

21110443041 is an equidigital number, since it uses as much as digits as its factorization.

21110443041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159495.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21110443041 its reverse (14034401112), we get a palindrome (35144844153).

The spelling of 21110443041 in words is "twenty-one billion, one hundred ten million, four hundred forty-three thousand, forty-one".