102120122057 has 2 divisors, whose sum is σ = 102120122058. Its totient is φ = 102120122056.

The previous prime is 102120121933. The next prime is 102120122077. The reversal of 102120122057 is 750221021201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53658942736 + 48461179321 = 231644^2 + 220139^2 .

It is an emirp because it is prime and its reverse (750221021201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102120122057 - 2²⁰ = 102119073481 is a prime.

It is a super-2 number, since 2×102120122057² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102120122077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060061028 + 51060061029.

It is an arithmetic number, because the mean of its divisors is an integer number (51060061029).

Almost surely, 2^102120122057 is an apocalyptic number.

It is an amenable number.

102120122057 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120122057 is an equidigital number, since it uses as much as digits as its factorization.

102120122057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 102120122057 its reverse (750221021201), we get a palindrome (852341143258).

The spelling of 102120122057 in words is "one hundred two billion, one hundred twenty million, one hundred twenty-two thousand, fifty-seven".