123321105 has 12 divisors (see below), whose sum is σ = 213756660. Its totient is φ = 65771232.

The previous prime is 123321103. The next prime is 123321113. The reversal of 123321105 is 501123321.

It can be written as a sum of positive squares in 2 ways, for example, as 96353856 + 26967249 = 9816^2 + 5193^2 .

It is not a de Polignac number, because 123321105 - 2¹ = 123321103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123321103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1370190 + ... + 1370279.

It is an arithmetic number, because the mean of its divisors is an integer number (17813055).

Almost surely, 2^123321105 is an apocalyptic number.

123321105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123321105 is a deficient number, since it is larger than the sum of its proper divisors (90435555).

123321105 is a wasteful number, since it uses less digits than its factorization.

123321105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740480 (or 2740477 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 123321105 is about 11105.0036019805. The cubic root of 123321105 is about 497.7513758721.

Adding to 123321105 its reverse (501123321), we get a palindrome (624444426).

The spelling of 123321105 in words is "one hundred twenty-three million, three hundred twenty-one thousand, one hundred five".