21441304323323 has 2 divisors, whose sum is σ = 21441304323324. Its totient is φ = 21441304323322.

The previous prime is 21441304323311. The next prime is 21441304323349. The reversal of 21441304323323 is 32332340314412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21441304323323 - 2⁸ = 21441304323067 is a prime.

It is not a weakly prime, because it can be changed into another prime (21441304329323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720652161661 + 10720652161662.

It is an arithmetic number, because the mean of its divisors is an integer number (10720652161662).

Almost surely, 2^{21441304323323} is an apocalyptic number.

21441304323323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21441304323323 is an equidigital number, since it uses as much as digits as its factorization.

21441304323323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 21441304323323 its reverse (32332340314412), we get a palindrome (53773644637735).

The spelling of 21441304323323 in words is "twenty-one trillion, four hundred forty-one billion, three hundred four million, three hundred twenty-three thousand, three hundred twenty-three".