12123023222305 has 16 divisors (see below), whose sum is σ = 14618178763344. Its totient is φ = 9651430886400.

The previous prime is 12123023222239. The next prime is 12123023222339. The reversal of 12123023222305 is 50322232032121.

It can be written as a sum of positive squares in 8 ways, for example, as 1631487626209 + 10491535596096 = 1277297^2 + 3239064^2 .

It is not a de Polignac number, because 12123023222305 - 2²³ = 12123014833697 is a prime.

It is a Duffinian 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, 790794 + ... + 4987123.

It is an arithmetic number, because the mean of its divisors is an integer number (913636172709).

Almost surely, 2^{12123023222305} is an apocalyptic number.

It is an amenable number.

12123023222305 is a deficient number, since it is larger than the sum of its proper divisors (2495155541039).

12123023222305 is a wasteful number, since it uses less digits than its factorization.

12123023222305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5779956.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 12123023222305 its reverse (50322232032121), we get a palindrome (62445255254426).

The spelling of 12123023222305 in words is "twelve trillion, one hundred twenty-three billion, twenty-three million, two hundred twenty-two thousand, three hundred five".