21112201163 has 2 divisors, whose sum is σ = 21112201164. Its totient is φ = 21112201162.

The previous prime is 21112201153. The next prime is 21112201261. The reversal of 21112201163 is 36110221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112201163 - 2¹⁰ = 21112200139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21112201133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556100581 + 10556100582.

It is an arithmetic number, because the mean of its divisors is an integer number (10556100582).

Almost surely, 2^21112201163 is an apocalyptic number.

21112201163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112201163 is an equidigital number, since it uses as much as digits as its factorization.

21112201163 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 20.

Adding to 21112201163 its reverse (36110221112), we get a palindrome (57222422275).

The spelling of 21112201163 in words is "twenty-one billion, one hundred twelve million, two hundred one thousand, one hundred sixty-three".