220220321873 has 2 divisors, whose sum is σ = 220220321874. Its totient is φ = 220220321872.

The previous prime is 220220321857. The next prime is 220220321903. The reversal of 220220321873 is 378123022022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205528942609 + 14691379264 = 453353^2 + 121208^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220321873 - 2⁴ = 220220321857 is a prime.

It is not a weakly prime, because it can be changed into another prime (220220321273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110160936 + 110110160937.

It is an arithmetic number, because the mean of its divisors is an integer number (110110160937).

Almost surely, 2^220220321873 is an apocalyptic number.

It is an amenable number.

220220321873 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220321873 is an equidigital number, since it uses as much as digits as its factorization.

220220321873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 220220321873 its reverse (378123022022), we get a palindrome (598343343895).

The spelling of 220220321873 in words is "two hundred twenty billion, two hundred twenty million, three hundred twenty-one thousand, eight hundred seventy-three".