102120002123 has 2 divisors, whose sum is σ = 102120002124. Its totient is φ = 102120002122.

The previous prime is 102120002081. The next prime is 102120002137. The reversal of 102120002123 is 321200021201.

It is a happy number.

It is an a-pointer prime, because the next prime (102120002137) can be obtained adding 102120002123 to its sum of digits (14).

It is a strong prime.

It is an emirp because it is prime and its reverse (321200021201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102120002123 - 2¹⁰ = 102120001099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102120002098 and 102120002107.

It is not a weakly prime, because it can be changed into another prime (102120032123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060001061 + 51060001062.

It is an arithmetic number, because the mean of its divisors is an integer number (51060001062).

Almost surely, 2^102120002123 is an apocalyptic number.

102120002123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120002123 is an equidigital number, since it uses as much as digits as its factorization.

102120002123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102120002123 its reverse (321200021201), we get a palindrome (423320023324).

The spelling of 102120002123 in words is "one hundred two billion, one hundred twenty million, two thousand, one hundred twenty-three".