21114042421603 has 2 divisors, whose sum is σ = 21114042421604. Its totient is φ = 21114042421602.

The previous prime is 21114042421601. The next prime is 21114042421631. The reversal of 21114042421603 is 30612424041112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21114042421603 - 2¹ = 21114042421601 is a prime.

Together with 21114042421601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21114042421601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557021210801 + 10557021210802.

It is an arithmetic number, because the mean of its divisors is an integer number (10557021210802).

Almost surely, 2^{21114042421603} is an apocalyptic number.

21114042421603 is a deficient number, since it is larger than the sum of its proper divisors (1).

21114042421603 is an equidigital number, since it uses as much as digits as its factorization.

21114042421603 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21114042421603 its reverse (30612424041112), we get a palindrome (51726466462715).

The spelling of 21114042421603 in words is "twenty-one trillion, one hundred fourteen billion, forty-two million, four hundred twenty-one thousand, six hundred three".