220221002017 has 2 divisors, whose sum is σ = 220221002018. Its totient is φ = 220221002016.

The previous prime is 220221002011. The next prime is 220221002051. The reversal of 220221002017 is 710200122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218627315776 + 1593686241 = 467576^2 + 39921^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221002017 - 2²³ = 220212613409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220221001985 and 220221002003.

It is not a weakly prime, because it can be changed into another prime (220221002011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110501008 + 110110501009.

It is an arithmetic number, because the mean of its divisors is an integer number (110110501009).

Almost surely, 2^220221002017 is an apocalyptic number.

It is an amenable number.

220221002017 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221002017 is an equidigital number, since it uses as much as digits as its factorization.

220221002017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 220221002017 its reverse (710200122022), we get a palindrome (930421124039).

The spelling of 220221002017 in words is "two hundred twenty billion, two hundred twenty-one million, two thousand, seventeen".