12629220209 has 2 divisors, whose sum is σ = 12629220210. Its totient is φ = 12629220208.

The previous prime is 12629220133. The next prime is 12629220223. The reversal of 12629220209 is 90202292621.

It is a happy number.

12629220209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11420128225 + 1209091984 = 106865^2 + 34772^2 .

It is a cyclic number.

It is not a de Polignac number, because 12629220209 - 2¹² = 12629216113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12629226209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6314610104 + 6314610105.

It is an arithmetic number, because the mean of its divisors is an integer number (6314610105).

Almost surely, 2^12629220209 is an apocalyptic number.

It is an amenable number.

12629220209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12629220209 is an equidigital number, since it uses as much as digits as its factorization.

12629220209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 12629220209 in words is "twelve billion, six hundred twenty-nine million, two hundred twenty thousand, two hundred nine".