221002112021017 has 2 divisors, whose sum is σ = 221002112021018. Its totient is φ = 221002112021016.

The previous prime is 221002112020969. The next prime is 221002112021059. The reversal of 221002112021017 is 710120211200122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188922303499801 + 32079808521216 = 13744901^2 + 5663904^2 .

It is a cyclic number.

It is not a de Polignac number, because 221002112021017 - 2³⁵ = 220967752282649 is a prime.

It is not a weakly prime, because it can be changed into another prime (221002112021417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501056010508 + 110501056010509.

It is an arithmetic number, because the mean of its divisors is an integer number (110501056010509).

Almost surely, 2^{221002112021017} is an apocalyptic number.

It is an amenable number.

221002112021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002112021017 is an equidigital number, since it uses as much as digits as its factorization.

221002112021017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 221002112021017 its reverse (710120211200122), we get a palindrome (931122323221139).

The spelling of 221002112021017 in words is "two hundred twenty-one trillion, two billion, one hundred twelve million, twenty-one thousand, seventeen".