30012112105 has 8 divisors (see below), whose sum is σ = 36987900552. Its totient is φ = 23360779008.

The previous prime is 30012112099. The next prime is 30012112121. The reversal of 30012112105 is 50121121003.

It can be written as a sum of positive squares in 4 ways, for example, as 10279729321 + 19732382784 = 101389^2 + 140472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30012112105 - 2⁵ = 30012112073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81113632 + ... + 81114001.

It is an arithmetic number, because the mean of its divisors is an integer number (4623487569).

Almost surely, 2^30012112105 is an apocalyptic number.

It is an amenable number.

30012112105 is a deficient number, since it is larger than the sum of its proper divisors (6975788447).

30012112105 is a wasteful number, since it uses less digits than its factorization.

30012112105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162227675.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 30012112105 its reverse (50121121003), we get a palindrome (80133233108).

The spelling of 30012112105 in words is "thirty billion, twelve million, one hundred twelve thousand, one hundred five".