21401101063 has 2 divisors, whose sum is σ = 21401101064. Its totient is φ = 21401101062.

The previous prime is 21401101013. The next prime is 21401101081. The reversal of 21401101063 is 36010110412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21401101063 - 2²¹ = 21399003911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21401101063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21401101013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700550531 + 10700550532.

It is an arithmetic number, because the mean of its divisors is an integer number (10700550532).

Almost surely, 2^21401101063 is an apocalyptic number.

21401101063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21401101063 is an equidigital number, since it uses as much as digits as its factorization.

21401101063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21401101063 its reverse (36010110412), we get a palindrome (57411211475).

The spelling of 21401101063 in words is "twenty-one billion, four hundred one million, one hundred one thousand, sixty-three".