21441113411 has 4 divisors (see below), whose sum is σ = 21441407424. Its totient is φ = 21440819400.

The previous prime is 21441113341. The next prime is 21441113417. The reversal of 21441113411 is 11431114412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21441113411 - 2²² = 21436919107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21441113417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53966 + ... + 213996.

It is an arithmetic number, because the mean of its divisors is an integer number (5360351856).

Almost surely, 2^21441113411 is an apocalyptic number.

21441113411 is a deficient number, since it is larger than the sum of its proper divisors (294013).

21441113411 is a wasteful number, since it uses less digits than its factorization.

21441113411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294012.

The product of its digits is 384, while the sum is 23.

Adding to 21441113411 its reverse (11431114412), we get a palindrome (32872227823).

The spelling of 21441113411 in words is "twenty-one billion, four hundred forty-one million, one hundred thirteen thousand, four hundred eleven".