21441200330111 has 2 divisors, whose sum is σ = 21441200330112. Its totient is φ = 21441200330110.

The previous prime is 21441200330087. The next prime is 21441200330113. The reversal of 21441200330111 is 11103300214412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21441200330111 - 2³⁸ = 21166322423167 is a prime.

Together with 21441200330113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21441200330113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720600165055 + 10720600165056.

It is an arithmetic number, because the mean of its divisors is an integer number (10720600165056).

Almost surely, 2^{21441200330111} is an apocalyptic number.

21441200330111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21441200330111 is an equidigital number, since it uses as much as digits as its factorization.

21441200330111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21441200330111 its reverse (11103300214412), we get a palindrome (32544500544523).

The spelling of 21441200330111 in words is "twenty-one trillion, four hundred forty-one billion, two hundred million, three hundred thirty thousand, one hundred eleven".