220217050505 has 8 divisors (see below), whose sum is σ = 264637441224. Its totient is φ = 175922320000.

The previous prime is 220217050489. The next prime is 220217050507. The reversal of 220217050505 is 505050712022.

220217050505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16664486281 + 203552564224 = 129091^2 + 451168^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220217050505 - 2⁴ = 220217050489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220217050507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31411196 + ... + 31418205.

It is an arithmetic number, because the mean of its divisors is an integer number (33079680153).

Almost surely, 2^220217050505 is an apocalyptic number.

It is an amenable number.

220217050505 is a deficient number, since it is larger than the sum of its proper divisors (44420390719).

220217050505 is an equidigital number, since it uses as much as digits as its factorization.

220217050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62830107.

The product of its (nonzero) digits is 7000, while the sum is 29.

Adding to 220217050505 its reverse (505050712022), we get a palindrome (725267762527).

The spelling of 220217050505 in words is "two hundred twenty billion, two hundred seventeen million, fifty thousand, five hundred five".