12122102077 has 2 divisors, whose sum is σ = 12122102078. Its totient is φ = 12122102076.

The previous prime is 12122102039. The next prime is 12122102147. The reversal of 12122102077 is 77020122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9849768516 + 2272333561 = 99246^2 + 47669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122102077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122102017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061051038 + 6061051039.

It is an arithmetic number, because the mean of its divisors is an integer number (6061051039).

Almost surely, 2^12122102077 is an apocalyptic number.

It is an amenable number.

12122102077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122102077 is an equidigital number, since it uses as much as digits as its factorization.

12122102077 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 25.

Adding to 12122102077 its reverse (77020122121), we get a palindrome (89142224198).

The spelling of 12122102077 in words is "twelve billion, one hundred twenty-two million, one hundred two thousand, seventy-seven".