102221066677 has 2 divisors, whose sum is σ = 102221066678. Its totient is φ = 102221066676.

The previous prime is 102221066621. The next prime is 102221066707. The reversal of 102221066677 is 776660122201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66444857361 + 35776209316 = 257769^2 + 189146^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221066677 - 2²³ = 102212678069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102221066477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110533338 + 51110533339.

It is an arithmetic number, because the mean of its divisors is an integer number (51110533339).

Almost surely, 2^102221066677 is an apocalyptic number.

It is an amenable number.

102221066677 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221066677 is an equidigital number, since it uses as much as digits as its factorization.

102221066677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

Adding to 102221066677 its reverse (776660122201), we get a palindrome (878881188878).

The spelling of 102221066677 in words is "one hundred two billion, two hundred twenty-one million, sixty-six thousand, six hundred seventy-seven".