30103205121 has 16 divisors (see below), whose sum is σ = 48651645120. Its totient is φ = 18244366560.

The previous prime is 30103205089. The next prime is 30103205131. The reversal of 30103205121 is 12150230103.

30103205121 is a `hidden beast` number, since 30 + 103 + 20 + 512 + 1 = 666.

It is not a de Polignac number, because 30103205121 - 2⁵ = 30103205089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30103205094 and 30103205103.

It is not an unprimeable number, because it can be changed into a prime (30103205131) 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 in 15 ways as a sum of consecutive naturals, for example, 50678500 + ... + 50679093.

It is an arithmetic number, because the mean of its divisors is an integer number (3040727820).

Almost surely, 2^30103205121 is an apocalyptic number.

It is an amenable number.

30103205121 is a deficient number, since it is larger than the sum of its proper divisors (18548439999).

30103205121 is a wasteful number, since it uses less digits than its factorization.

30103205121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101357613 (or 101357607 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 30103205121 its reverse (12150230103), we get a palindrome (42253435224).

The spelling of 30103205121 in words is "thirty billion, one hundred three million, two hundred five thousand, one hundred twenty-one".