220442017 has 2 divisors, whose sum is σ = 220442018. Its totient is φ = 220442016.

The previous prime is 220441981. The next prime is 220442029. The reversal of 220442017 is 710244022.

It is a happy number.

220442017 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., 179533201 + 40908816 = 13399^2 + 6396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220442017 is a prime.

It is not a weakly prime, because it can be changed into another prime (220452017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110221008 + 110221009.

It is an arithmetic number, because the mean of its divisors is an integer number (110221009).

Almost surely, 2^220442017 is an apocalyptic number.

It is an amenable number.

220442017 is a deficient number, since it is larger than the sum of its proper divisors (1).

220442017 is an equidigital number, since it uses as much as digits as its factorization.

220442017 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 22.

The square root of 220442017 is about 14847.2898873835. The cubic root of 220442017 is about 604.0851021485.

Adding to 220442017 its reverse (710244022), we get a palindrome (930686039).

The spelling of 220442017 in words is "two hundred twenty million, four hundred forty-two thousand, seventeen".