30121130123 has 16 divisors (see below), whose sum is σ = 35485185024. Its totient is φ = 25032603840.

The previous prime is 30121130101. The next prime is 30121130177. The reversal of 30121130123 is 32103112103.

It is a cyclic number.

It is not a de Polignac number, because 30121130123 - 2¹⁰ = 30121129099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121130623) 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 in 15 ways as a sum of consecutive naturals, for example, 392618 + ... + 463023.

It is an arithmetic number, because the mean of its divisors is an integer number (2217824064).

Almost surely, 2^30121130123 is an apocalyptic number.

30121130123 is a deficient number, since it is larger than the sum of its proper divisors (5364054901).

30121130123 is a wasteful number, since it uses less digits than its factorization.

30121130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855802.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30121130123 its reverse (32103112103), we get a palindrome (62224242226).

The spelling of 30121130123 in words is "thirty billion, one hundred twenty-one million, one hundred thirty thousand, one hundred twenty-three".