220145017 has 2 divisors, whose sum is σ = 220145018. Its totient is φ = 220145016.

The previous prime is 220144961. The next prime is 220145033. The reversal of 220145017 is 710541022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215032896 + 5112121 = 14664^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 220145017 - 2²³ = 211756409 is a prime.

It is not a weakly prime, because it can be changed into another prime (220145617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110072508 + 110072509.

It is an arithmetic number, because the mean of its divisors is an integer number (110072509).

Almost surely, 2^220145017 is an apocalyptic number.

It is an amenable number.

220145017 is a deficient number, since it is larger than the sum of its proper divisors (1).

220145017 is an equidigital number, since it uses as much as digits as its factorization.

220145017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 220145017 is about 14837.2846909399. The cubic root of 220145017 is about 603.8136869978.

Adding to 220145017 its reverse (710541022), we get a palindrome (930686039).

The spelling of 220145017 in words is "two hundred twenty million, one hundred forty-five thousand, seventeen".