21221113424341 has 16 divisors (see below), whose sum is σ = 22165815043008. Its totient is φ = 20297348406400.

The previous prime is 21221113424333. The next prime is 21221113424351. The reversal of 21221113424341 is 14342431112212.

It is a cyclic number.

It is not a de Polignac number, because 21221113424341 - 2³ = 21221113424333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21221113424351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 895855 + ... + 6576076.

It is an arithmetic number, because the mean of its divisors is an integer number (1385363440188).

Almost surely, 2^{21221113424341} is an apocalyptic number.

It is an amenable number.

21221113424341 is a deficient number, since it is larger than the sum of its proper divisors (944701618667).

21221113424341 is a wasteful number, since it uses less digits than its factorization.

21221113424341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473332.

The product of its digits is 9216, while the sum is 31.

Adding to 21221113424341 its reverse (14342431112212), we get a palindrome (35563544536553).

The spelling of 21221113424341 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred thirteen million, four hundred twenty-four thousand, three hundred forty-one".