21102212211089 has 2 divisors, whose sum is σ = 21102212211090. Its totient is φ = 21102212211088.

The previous prime is 21102212211061. The next prime is 21102212211187. The reversal of 21102212211089 is 98011221220112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16554156942400 + 4548055268689 = 4068680^2 + 2132617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21102212211089 is a prime.

It is not a weakly prime, because it can be changed into another prime (21102212211049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551106105544 + 10551106105545.

It is an arithmetic number, because the mean of its divisors is an integer number (10551106105545).

Almost surely, 2^{21102212211089} is an apocalyptic number.

It is an amenable number.

21102212211089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102212211089 is an equidigital number, since it uses as much as digits as its factorization.

21102212211089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 32.

The spelling of 21102212211089 in words is "twenty-one trillion, one hundred two billion, two hundred twelve million, two hundred eleven thousand, eighty-nine".