12102110117 has 2 divisors, whose sum is σ = 12102110118. Its totient is φ = 12102110116.

The previous prime is 12102110099. The next prime is 12102110177. The reversal of 12102110117 is 71101120121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11785056481 + 317053636 = 108559^2 + 17806^2 .

It is an emirp because it is prime and its reverse (71101120121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12102110117 - 2⁸ = 12102109861 is a prime.

It is a super-2 number, since 2×12102110117² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102110095 and 12102110104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102110177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051055058 + 6051055059.

It is an arithmetic number, because the mean of its divisors is an integer number (6051055059).

Almost surely, 2^12102110117 is an apocalyptic number.

It is an amenable number.

12102110117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102110117 is an equidigital number, since it uses as much as digits as its factorization.

12102110117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 12102110117 its reverse (71101120121), we get a palindrome (83203230238).

The spelling of 12102110117 in words is "twelve billion, one hundred two million, one hundred ten thousand, one hundred seventeen".