220122100221 has 32 divisors (see below), whose sum is σ = 307807641600. Its totient is φ = 139736076480.

The previous prime is 220122100189. The next prime is 220122100223. The reversal of 220122100221 is 122001221022.

220122100221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220122100221 - 2⁵ = 220122100189 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220122100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122100223) 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 31 ways as a sum of consecutive naturals, for example, 6216156 + ... + 6251466.

It is an arithmetic number, because the mean of its divisors is an integer number (9618988800).

Almost surely, 2^220122100221 is an apocalyptic number.

It is an amenable number.

220122100221 is a deficient number, since it is larger than the sum of its proper divisors (87685541379).

220122100221 is a wasteful number, since it uses less digits than its factorization.

220122100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36329.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220122100221 its reverse (122001221022), we get a palindrome (342123321243).

The spelling of 220122100221 in words is "two hundred twenty billion, one hundred twenty-two million, one hundred thousand, two hundred twenty-one".