30112012121 has 2 divisors, whose sum is σ = 30112012122. Its totient is φ = 30112012120.

The previous prime is 30112012103. The next prime is 30112012153. The reversal of 30112012121 is 12121021103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24857936896 + 5254075225 = 157664^2 + 72485^2 .

It is a cyclic number.

It is not a de Polignac number, because 30112012121 - 2²⁶ = 30044903257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30112012096 and 30112012105.

It is not a weakly prime, because it can be changed into another prime (30112012171) 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, 15056006060 + 15056006061.

It is an arithmetic number, because the mean of its divisors is an integer number (15056006061).

Almost surely, 2^30112012121 is an apocalyptic number.

It is an amenable number.

30112012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30112012121 is an equidigital number, since it uses as much as digits as its factorization.

30112012121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 30112012121 its reverse (12121021103), we get a palindrome (42233033224).

The spelling of 30112012121 in words is "thirty billion, one hundred twelve million, twelve thousand, one hundred twenty-one".