201030442021 has 2 divisors, whose sum is σ = 201030442022. Its totient is φ = 201030442020.

The previous prime is 201030441967. The next prime is 201030442043. The reversal of 201030442021 is 120244030102.

201030442021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145763604100 + 55266837921 = 381790^2 + 235089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201030442021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201030442021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201030442051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515221010 + 100515221011.

It is an arithmetic number, because the mean of its divisors is an integer number (100515221011).

Almost surely, 2^201030442021 is an apocalyptic number.

It is an amenable number.

201030442021 is a deficient number, since it is larger than the sum of its proper divisors (1).

201030442021 is an equidigital number, since it uses as much as digits as its factorization.

201030442021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 201030442021 its reverse (120244030102), we get a palindrome (321274472123).

The spelling of 201030442021 in words is "two hundred one billion, thirty million, four hundred forty-two thousand, twenty-one".