20130002129 has 2 divisors, whose sum is σ = 20130002130. Its totient is φ = 20130002128.

The previous prime is 20130002119. The next prime is 20130002149. The reversal of 20130002129 is 92120003102.

It is an a-pointer prime, because the next prime (20130002149) can be obtained adding 20130002129 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19418979904 + 711022225 = 139352^2 + 26665^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130002129 - 2⁸ = 20130001873 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 20130002129.

It is not a weakly prime, because it can be changed into another prime (20130002119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065001064 + 10065001065.

It is an arithmetic number, because the mean of its divisors is an integer number (10065001065).

Almost surely, 2^20130002129 is an apocalyptic number.

It is an amenable number.

20130002129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130002129 is an equidigital number, since it uses as much as digits as its factorization.

20130002129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 20130002129 in words is "twenty billion, one hundred thirty million, two thousand, one hundred twenty-nine".