30101210221 has 2 divisors, whose sum is σ = 30101210222. Its totient is φ = 30101210220.

The previous prime is 30101210171. The next prime is 30101210291. The reversal of 30101210221 is 12201210103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28346773225 + 1754436996 = 168365^2 + 41886^2 .

It is an emirp because it is prime and its reverse (12201210103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30101210221 - 2¹¹ = 30101208173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30101210291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15050605110 + 15050605111.

It is an arithmetic number, because the mean of its divisors is an integer number (15050605111).

Almost surely, 2^30101210221 is an apocalyptic number.

It is an amenable number.

30101210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30101210221 is an equidigital number, since it uses as much as digits as its factorization.

30101210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 30101210221 its reverse (12201210103), we get a palindrome (42302420324).

The spelling of 30101210221 in words is "thirty billion, one hundred one million, two hundred ten thousand, two hundred twenty-one".