12222120221977 has 2 divisors, whose sum is σ = 12222120221978. Its totient is φ = 12222120221976.

The previous prime is 12222120221921. The next prime is 12222120222017. The reversal of 12222120221977 is 77912202122221.

It is an a-pointer prime, because the next prime (12222120222017) can be obtained adding 12222120221977 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11272812965001 + 949307256976 = 3357501^2 + 974324^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222120221977 - 2⁷ = 12222120221849 is a prime.

It is a super-2 number, since 2×12222120221977² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12222120221477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111060110988 + 6111060110989.

It is an arithmetic number, because the mean of its divisors is an integer number (6111060110989).

Almost surely, 2^{12222120221977} is an apocalyptic number.

It is an amenable number.

12222120221977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222120221977 is an equidigital number, since it uses as much as digits as its factorization.

12222120221977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 12222120221977 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, nine hundred seventy-seven".