30121433129 has 2 divisors, whose sum is σ = 30121433130. Its totient is φ = 30121433128.

The previous prime is 30121433113. The next prime is 30121433203. The reversal of 30121433129 is 92133412103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24211360000 + 5910073129 = 155600^2 + 76877^2 .

It is a cyclic number.

It is not a de Polignac number, because 30121433129 - 2⁴ = 30121433113 is a prime.

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 (30121433429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060716564 + 15060716565.

It is an arithmetic number, because the mean of its divisors is an integer number (15060716565).

Almost surely, 2^30121433129 is an apocalyptic number.

It is an amenable number.

30121433129 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121433129 is an equidigital number, since it uses as much as digits as its factorization.

30121433129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 30121433129 in words is "thirty billion, one hundred twenty-one million, four hundred thirty-three thousand, one hundred twenty-nine".