30055105021 has 2 divisors, whose sum is σ = 30055105022. Its totient is φ = 30055105020.

The previous prime is 30055104943. The next prime is 30055105039. The reversal of 30055105021 is 12050155003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21399593796 + 8655511225 = 146286^2 + 93035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30055105021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30055104983 and 30055105001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30055100021) 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, 15027552510 + 15027552511.

It is an arithmetic number, because the mean of its divisors is an integer number (15027552511).

Almost surely, 2^30055105021 is an apocalyptic number.

It is an amenable number.

30055105021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30055105021 is an equidigital number, since it uses as much as digits as its factorization.

30055105021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 22.

The spelling of 30055105021 in words is "thirty billion, fifty-five million, one hundred five thousand, twenty-one".