30121110013 has 2 divisors, whose sum is σ = 30121110014. Its totient is φ = 30121110012.

The previous prime is 30121109989. The next prime is 30121110053. The reversal of 30121110013 is 31001112103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16868035129 + 13253074884 = 129877^2 + 115122^2 .

It is a cyclic number.

It is not a de Polignac number, because 30121110013 - 2²⁹ = 29584239101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30121109975 and 30121110002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121110053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060555006 + 15060555007.

It is an arithmetic number, because the mean of its divisors is an integer number (15060555007).

Almost surely, 2^30121110013 is an apocalyptic number.

It is an amenable number.

30121110013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121110013 is an equidigital number, since it uses as much as digits as its factorization.

30121110013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 30121110013 its reverse (31001112103), we get a palindrome (61122222116).

It can be divided in two parts, 3012 and 1110013, that added together give a square (1113025 = 1055²).

The spelling of 30121110013 in words is "thirty billion, one hundred twenty-one million, one hundred ten thousand, thirteen".