220123110221 has 16 divisors (see below), whose sum is σ = 259783707648. Its totient is φ = 182520777600.

The previous prime is 220123110211. The next prime is 220123110223. The reversal of 220123110221 is 122011321022.

It is not a de Polignac number, because 220123110221 - 2²² = 220118915917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220123110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123110223) 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 in 15 ways as a sum of consecutive naturals, for example, 378731 + ... + 763991.

It is an arithmetic number, because the mean of its divisors is an integer number (16236481728).

Almost surely, 2^220123110221 is an apocalyptic number.

It is an amenable number.

220123110221 is a deficient number, since it is larger than the sum of its proper divisors (39660597427).

220123110221 is a wasteful number, since it uses less digits than its factorization.

220123110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387932.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 220123110221 its reverse (122011321022), we get a palindrome (342134431243).

The spelling of 220123110221 in words is "two hundred twenty billion, one hundred twenty-three million, one hundred ten thousand, two hundred twenty-one".