102110212123 has 2 divisors, whose sum is σ = 102110212124. Its totient is φ = 102110212122.

The previous prime is 102110212111. The next prime is 102110212153. The reversal of 102110212123 is 321212011201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102110212123 - 2⁹ = 102110211611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102110212097 and 102110212106.

It is not a weakly prime, because it can be changed into another prime (102110212153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055106061 + 51055106062.

It is an arithmetic number, because the mean of its divisors is an integer number (51055106062).

Almost surely, 2^102110212123 is an apocalyptic number.

102110212123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102110212123 is an equidigital number, since it uses as much as digits as its factorization.

102110212123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102110212123 its reverse (321212011201), we get a palindrome (423322223324).

The spelling of 102110212123 in words is "one hundred two billion, one hundred ten million, two hundred twelve thousand, one hundred twenty-three".