221030203021013 has 2 divisors, whose sum is σ = 221030203021014. Its totient is φ = 221030203021012.

The previous prime is 221030203020971. The next prime is 221030203021027. The reversal of 221030203021013 is 310120302030122.

221030203021013 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., 156034649252689 + 64995553768324 = 12491383^2 + 8061982^2 .

It is a cyclic number.

It is not a de Polignac number, because 221030203021013 - 2¹⁶ = 221030202955477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221030203021063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110515101510506 + 110515101510507.

It is an arithmetic number, because the mean of its divisors is an integer number (110515101510507).

Almost surely, 2^{221030203021013} is an apocalyptic number.

It is an amenable number.

221030203021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

221030203021013 is an equidigital number, since it uses as much as digits as its factorization.

221030203021013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221030203021013 its reverse (310120302030122), we get a palindrome (531150505051135).

The spelling of 221030203021013 in words is "two hundred twenty-one trillion, thirty billion, two hundred three million, twenty-one thousand, thirteen".