12102122177 has 2 divisors, whose sum is σ = 12102122178. Its totient is φ = 12102122176.

The previous prime is 12102122173. The next prime is 12102122191. The reversal of 12102122177 is 77122120121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11879038081 + 223084096 = 108991^2 + 14936^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102122177 - 2² = 12102122173 is a prime.

It is a super-2 number, since 2×12102122177² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12102122173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051061088 + 6051061089.

It is an arithmetic number, because the mean of its divisors is an integer number (6051061089).

Almost surely, 2^12102122177 is an apocalyptic number.

It is an amenable number.

12102122177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102122177 is an equidigital number, since it uses as much as digits as its factorization.

12102122177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 12102122177 its reverse (77122120121), we get a palindrome (89224242298).

The spelling of 12102122177 in words is "twelve billion, one hundred two million, one hundred twenty-two thousand, one hundred seventy-seven".