123211401305 has 16 divisors (see below), whose sum is σ = 155657851200. Its totient is φ = 93367834560.

The previous prime is 123211401293. The next prime is 123211401317. The reversal of 123211401305 is 503104112321.

It is an interprime number because it is at equal distance from previous prime (123211401293) and next prime (123211401317).

It is not a de Polignac number, because 123211401305 - 2⁶ = 123211401241 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597050 + ... + 776460.

It is an arithmetic number, because the mean of its divisors is an integer number (9728615700).

Almost surely, 2^123211401305 is an apocalyptic number.

It is an amenable number.

123211401305 is a deficient number, since it is larger than the sum of its proper divisors (32446449895).

123211401305 is a wasteful number, since it uses less digits than its factorization.

123211401305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186664.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 123211401305 its reverse (503104112321), we get a palindrome (626315513626).

The spelling of 123211401305 in words is "one hundred twenty-three billion, two hundred eleven million, four hundred one thousand, three hundred five".