30121152051005 has 4 divisors (see below), whose sum is σ = 36145382461212. Its totient is φ = 24096921640800.

The previous prime is 30121152050987. The next prime is 30121152051061. The reversal of 30121152051005 is 50015025112103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17420581397209 + 12700570653796 = 4173797^2 + 3563786^2 .

It is not a de Polignac number, because 30121152051005 - 2⁸ = 30121152050749 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 3012115205096 + ... + 3012115205105.

It is an arithmetic number, because the mean of its divisors is an integer number (9036345615303).

Almost surely, 2^{30121152051005} is an apocalyptic number.

It is an amenable number.

30121152051005 is a deficient number, since it is larger than the sum of its proper divisors (6024230410207).

30121152051005 is an equidigital number, since it uses as much as digits as its factorization.

30121152051005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6024230410206.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 30121152051005 its reverse (50015025112103), we get a palindrome (80136177163108).

The spelling of 30121152051005 in words is "thirty trillion, one hundred twenty-one billion, one hundred fifty-two million, fifty-one thousand, five".