21302322019969 has 2 divisors, whose sum is σ = 21302322019970. Its totient is φ = 21302322019968.

The previous prime is 21302322019967. The next prime is 21302322019981. The reversal of 21302322019969 is 96991022320312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21280571669569 + 21750350400 = 4613087^2 + 147480^2 .

It is a cyclic number.

It is not a de Polignac number, because 21302322019969 - 2¹ = 21302322019967 is a prime.

It is a super-2 number, since 2×21302322019969² (a number of 27 digits) contains 22 as substring.

Together with 21302322019967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21302322019967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651161009984 + 10651161009985.

It is an arithmetic number, because the mean of its divisors is an integer number (10651161009985).

Almost surely, 2^{21302322019969} is an apocalyptic number.

It is an amenable number.

21302322019969 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302322019969 is an equidigital number, since it uses as much as digits as its factorization.

21302322019969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 49.

The spelling of 21302322019969 in words is "twenty-one trillion, three hundred two billion, three hundred twenty-two million, nineteen thousand, nine hundred sixty-nine".