21344011103 has 2 divisors, whose sum is σ = 21344011104. Its totient is φ = 21344011102.

The previous prime is 21344011069. The next prime is 21344011217. The reversal of 21344011103 is 30111044312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21344011103 - 2¹⁴ = 21343994719 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21344001103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10672005551 + 10672005552.

It is an arithmetic number, because the mean of its divisors is an integer number (10672005552).

Almost surely, 2^21344011103 is an apocalyptic number.

21344011103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21344011103 is an equidigital number, since it uses as much as digits as its factorization.

21344011103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21344011103 its reverse (30111044312), we get a palindrome (51455055415).

The spelling of 21344011103 in words is "twenty-one billion, three hundred forty-four million, eleven thousand, one hundred three".