12911202222077 has 2 divisors, whose sum is σ = 12911202222078. Its totient is φ = 12911202222076.

The previous prime is 12911202222043. The next prime is 12911202222131. The reversal of 12911202222077 is 77022220211921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12098195236516 + 813006985561 = 3478246^2 + 901669^2 .

It is a cyclic number.

It is not a de Polignac number, because 12911202222077 - 2⁸ = 12911202221821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12911202222077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12911202222377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6455601111038 + 6455601111039.

It is an arithmetic number, because the mean of its divisors is an integer number (6455601111039).

Almost surely, 2^{12911202222077} is an apocalyptic number.

It is an amenable number.

12911202222077 is a deficient number, since it is larger than the sum of its proper divisors (1).

12911202222077 is an equidigital number, since it uses as much as digits as its factorization.

12911202222077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

Adding to 12911202222077 its reverse (77022220211921), we get a palindrome (89933422433998).

The spelling of 12911202222077 in words is "twelve trillion, nine hundred eleven billion, two hundred two million, two hundred twenty-two thousand, seventy-seven".