21441244214411 has 32 divisors (see below), whose sum is σ = 25630609612800. Its totient is φ = 17920806573600.

The previous prime is 21441244214323. The next prime is 21441244214413. The reversal of 21441244214411 is 11441244214412.

It is not a de Polignac number, because 21441244214411 - 2²² = 21441240020107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21441244214413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1914881 + ... + 6822701.

It is an arithmetic number, because the mean of its divisors is an integer number (800956550400).

Almost surely, 2^{21441244214411} is an apocalyptic number.

21441244214411 is a deficient number, since it is larger than the sum of its proper divisors (4189365398389).

21441244214411 is an equidigital number, since it uses as much as digits as its factorization.

21441244214411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908160 (or 4908146 counting only the distinct ones).

The product of its digits is 32768, while the sum is 35.

Adding to 21441244214411 its reverse (11441244214412), we get a palindrome (32882488428823).

Subtracting from 21441244214411 its reverse (11441244214412), we obtain a palindrome (9999999999999).

The spelling of 21441244214411 in words is "twenty-one trillion, four hundred forty-one billion, two hundred forty-four million, two hundred fourteen thousand, four hundred eleven".