102120104420077 has 2 divisors, whose sum is σ = 102120104420078. Its totient is φ = 102120104420076.

The previous prime is 102120104420051. The next prime is 102120104420141. The reversal of 102120104420077 is 770024401021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96955807264996 + 5164297155081 = 9846614^2 + 2272509^2 .

It is a cyclic number.

It is not a de Polignac number, because 102120104420077 - 2³⁹ = 101570348606189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102120104424077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060052210038 + 51060052210039.

It is an arithmetic number, because the mean of its divisors is an integer number (51060052210039).

Almost surely, 2^{102120104420077} is an apocalyptic number.

It is an amenable number.

102120104420077 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120104420077 is an equidigital number, since it uses as much as digits as its factorization.

102120104420077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

Adding to 102120104420077 its reverse (770024401021201), we get a palindrome (872144505441278).

The spelling of 102120104420077 in words is "one hundred two trillion, one hundred twenty billion, one hundred four million, four hundred twenty thousand, seventy-seven".