1210002200129 has 2 divisors, whose sum is σ = 1210002200130. Its totient is φ = 1210002200128.

The previous prime is 1210002200087. The next prime is 1210002200149. The reversal of 1210002200129 is 9210022000121.

It is a happy number.

It is an a-pointer prime, because the next prime (1210002200149) can be obtained adding 1210002200129 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783269250625 + 426732949504 = 885025^2 + 653248^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210002200129 - 2²⁰ = 1210001151553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1210002200129.

It is not a weakly prime, because it can be changed into another prime (1210002200149) 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, 605001100064 + 605001100065.

It is an arithmetic number, because the mean of its divisors is an integer number (605001100065).

Almost surely, 2^{1210002200129} is an apocalyptic number.

It is an amenable number.

1210002200129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210002200129 is an equidigital number, since it uses as much as digits as its factorization.

1210002200129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1210002200129 in words is "one trillion, two hundred ten billion, two million, two hundred thousand, one hundred twenty-nine".