21002166606119 has 2 divisors, whose sum is σ = 21002166606120. Its totient is φ = 21002166606118.

The previous prime is 21002166606101. The next prime is 21002166606131. The reversal of 21002166606119 is 91160666120012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21002166606119 - 2⁸ = 21002166605863 is a prime.

It is a super-2 number, since 2×21002166606119² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21002166609119) 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, 10501083303059 + 10501083303060.

It is an arithmetic number, because the mean of its divisors is an integer number (10501083303060).

Almost surely, 2^{21002166606119} is an apocalyptic number.

21002166606119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002166606119 is an equidigital number, since it uses as much as digits as its factorization.

21002166606119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 21002166606119 in words is "twenty-one trillion, two billion, one hundred sixty-six million, six hundred six thousand, one hundred nineteen".