123101105 has 4 divisors (see below), whose sum is σ = 147721332. Its totient is φ = 98480880.

The previous prime is 123101087. The next prime is 123101119. The reversal of 123101105 is 501101321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25170289 + 97930816 = 5017^2 + 9896^2 .

It is not a de Polignac number, because 123101105 - 2¹⁴ = 123084721 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 123101105.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12310106 + ... + 12310115.

It is an arithmetic number, because the mean of its divisors is an integer number (36930333).

Almost surely, 2^123101105 is an apocalyptic number.

It is an amenable number.

123101105 is a deficient number, since it is larger than the sum of its proper divisors (24620227).

123101105 is an equidigital number, since it uses as much as digits as its factorization.

123101105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24620226.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 123101105 is about 11095.0937355211. The cubic root of 123101105 is about 497.4552100616.

Adding to 123101105 its reverse (501101321), we get a palindrome (624202426).

The spelling of 123101105 in words is "one hundred twenty-three million, one hundred one thousand, one hundred five".