30121313131109 has 2 divisors, whose sum is σ = 30121313131110. Its totient is φ = 30121313131108.

The previous prime is 30121313131099. The next prime is 30121313131139. The reversal of 30121313131109 is 90113131312103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17389083480484 + 12732229650625 = 4170022^2 + 3568225^2 .

It is a cyclic number.

It is not a de Polignac number, because 30121313131109 - 2¹⁶ = 30121313065573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121313131139) by changing a digit.

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 as a sum of consecutive naturals, namely, 15060656565554 + 15060656565555.

It is an arithmetic number, because the mean of its divisors is an integer number (15060656565555).

Almost surely, 2^{30121313131109} is an apocalyptic number.

It is an amenable number.

30121313131109 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121313131109 is an equidigital number, since it uses as much as digits as its factorization.

30121313131109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The spelling of 30121313131109 in words is "thirty trillion, one hundred twenty-one billion, three hundred thirteen million, one hundred thirty-one thousand, one hundred nine".