221022008017 has 2 divisors, whose sum is σ = 221022008018. Its totient is φ = 221022008016.

The previous prime is 221022007981. The next prime is 221022008069. The reversal of 221022008017 is 710800220122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199131030081 + 21890977936 = 446241^2 + 147956^2 .

It is a cyclic number.

It is not a de Polignac number, because 221022008017 - 2²⁷ = 220887790289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221022007982 and 221022008000.

It is not a weakly prime, because it can be changed into another prime (221022068017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511004008 + 110511004009.

It is an arithmetic number, because the mean of its divisors is an integer number (110511004009).

Almost surely, 2^221022008017 is an apocalyptic number.

It is an amenable number.

221022008017 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022008017 is an equidigital number, since it uses as much as digits as its factorization.

221022008017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 221022008017 its reverse (710800220122), we get a palindrome (931822228139).

The spelling of 221022008017 in words is "two hundred twenty-one billion, twenty-two million, eight thousand, seventeen".