22129459169 has 2 divisors, whose sum is σ = 22129459170. Its totient is φ = 22129459168.

The previous prime is 22129459141. The next prime is 22129459207. The reversal of 22129459169 is 96195492122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14782912225 + 7346546944 = 121585^2 + 85712^2 .

It is a cyclic number.

It is not a de Polignac number, because 22129459169 - 2⁸ = 22129458913 is a prime.

It is a super-2 number, since 2×22129459169² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22129459109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11064729584 + 11064729585.

It is an arithmetic number, because the mean of its divisors is an integer number (11064729585).

Almost surely, 2^22129459169 is an apocalyptic number.

It is an amenable number.

22129459169 is a deficient number, since it is larger than the sum of its proper divisors (1).

22129459169 is an equidigital number, since it uses as much as digits as its factorization.

22129459169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 50.

The spelling of 22129459169 in words is "twenty-two billion, one hundred twenty-nine million, four hundred fifty-nine thousand, one hundred sixty-nine".