21322130109017 has 2 divisors, whose sum is σ = 21322130109018. Its totient is φ = 21322130109016.

The previous prime is 21322130108953. The next prime is 21322130109019. The reversal of 21322130109017 is 71090103122312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12538369393936 + 8783760715081 = 3540956^2 + 2963741^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322130109017 - 2⁶ = 21322130108953 is a prime.

Together with 21322130109019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21322130109019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661065054508 + 10661065054509.

It is an arithmetic number, because the mean of its divisors is an integer number (10661065054509).

Almost surely, 2^{21322130109017} is an apocalyptic number.

It is an amenable number.

21322130109017 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322130109017 is an equidigital number, since it uses as much as digits as its factorization.

21322130109017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 21322130109017 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred thirty million, one hundred nine thousand, seventeen".