12002123117 has 2 divisors, whose sum is σ = 12002123118. Its totient is φ = 12002123116.

The previous prime is 12002123099. The next prime is 12002123141. The reversal of 12002123117 is 71132120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11878602121 + 123520996 = 108989^2 + 11114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002123117 - 2²⁸ = 11733687661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12002123017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001061558 + 6001061559.

It is an arithmetic number, because the mean of its divisors is an integer number (6001061559).

Almost surely, 2^12002123117 is an apocalyptic number.

It is an amenable number.

12002123117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002123117 is an equidigital number, since it uses as much as digits as its factorization.

12002123117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 12002123117 its reverse (71132120021), we get a palindrome (83134243138).

The spelling of 12002123117 in words is "twelve billion, two million, one hundred twenty-three thousand, one hundred seventeen".