30000010121 has 2 divisors, whose sum is σ = 30000010122. Its totient is φ = 30000010120.

The previous prime is 30000010057. The next prime is 30000010127. The reversal of 30000010121 is 12101000003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16432419721 + 13567590400 = 128189^2 + 116480^2 .

It is a cyclic number.

It is not a de Polignac number, because 30000010121 - 2⁶ = 30000010057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30000010099 and 30000010108.

It is not a weakly prime, because it can be changed into another prime (30000010127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000005060 + 15000005061.

It is an arithmetic number, because the mean of its divisors is an integer number (15000005061).

Almost surely, 2^30000010121 is an apocalyptic number.

It is an amenable number.

30000010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30000010121 is an equidigital number, since it uses as much as digits as its factorization.

30000010121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 30000010121 its reverse (12101000003), we get a palindrome (42101010124).

The spelling of 30000010121 in words is "thirty billion, ten thousand, one hundred twenty-one".