220123105 has 8 divisors (see below), whose sum is σ = 267766632. Its totient is φ = 173685888.

The previous prime is 220123093. The next prime is 220123109. The reversal of 220123105 is 501321022.

It can be written as a sum of positive squares in 4 ways, for example, as 5588496 + 214534609 = 2364^2 + 14647^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 220123105 - 2²⁵ = 186568673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220123109) 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 7 ways as a sum of consecutive naturals, for example, 301174 + ... + 301903.

It is an arithmetic number, because the mean of its divisors is an integer number (33470829).

Almost surely, 2^220123105 is an apocalyptic number.

It is an amenable number.

220123105 is a deficient number, since it is larger than the sum of its proper divisors (47643527).

220123105 is an equidigital number, since it uses as much as digits as its factorization.

220123105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603155.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 220123105 is about 14836.5462625235. The cubic root of 220123105 is about 603.7936529241.

Adding to 220123105 its reverse (501321022), we get a palindrome (721444127).

The spelling of 220123105 in words is "two hundred twenty million, one hundred twenty-three thousand, one hundred five".