12123001201 has 4 divisors (see below), whose sum is σ = 12124232100. Its totient is φ = 12121770304.

The previous prime is 12123001181. The next prime is 12123001229. The reversal of 12123001201 is 10210032121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10210032121 = 853 ⋅11969557.

It can be written as a sum of positive squares in 2 ways, for example, as 1211109601 + 10911891600 = 34801^2 + 104460^2 .

It is a cyclic number.

It is not a de Polignac number, because 12123001201 - 2⁹ = 12123000689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123001901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600556 + ... + 620413.

It is an arithmetic number, because the mean of its divisors is an integer number (3031058025).

Almost surely, 2^12123001201 is an apocalyptic number.

It is an amenable number.

12123001201 is a deficient number, since it is larger than the sum of its proper divisors (1230899).

12123001201 is an equidigital number, since it uses as much as digits as its factorization.

12123001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230898.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12123001201 its reverse (10210032121), we get a palindrome (22333033322).

The spelling of 12123001201 in words is "twelve billion, one hundred twenty-three million, one thousand, two hundred one".