12123222977 has 2 divisors, whose sum is σ = 12123222978. Its totient is φ = 12123222976.

The previous prime is 12123222929. The next prime is 12123222989. The reversal of 12123222977 is 77922232121.

12123222977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10656639361 + 1466583616 = 103231^2 + 38296^2 .

It is a cyclic number.

It is not a de Polignac number, because 12123222977 - 2⁶ = 12123222913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12123222977.

It is not a weakly prime, because it can be changed into another prime (12123222907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061611488 + 6061611489.

It is an arithmetic number, because the mean of its divisors is an integer number (6061611489).

Almost surely, 2^12123222977 is an apocalyptic number.

It is an amenable number.

12123222977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123222977 is an equidigital number, since it uses as much as digits as its factorization.

12123222977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The spelling of 12123222977 in words is "twelve billion, one hundred twenty-three million, two hundred twenty-two thousand, nine hundred seventy-seven".