102111002008123 has 2 divisors, whose sum is σ = 102111002008124. Its totient is φ = 102111002008122.

The previous prime is 102111002008121. The next prime is 102111002008139. The reversal of 102111002008123 is 321800200111201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102111002008123 - 2¹ = 102111002008121 is a prime.

It is a super-2 number, since 2×102111002008123² (a number of 29 digits) contains 22 as substring.

Together with 102111002008121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 102111002008094 and 102111002008103.

It is not a weakly prime, because it can be changed into another prime (102111002008121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055501004061 + 51055501004062.

It is an arithmetic number, because the mean of its divisors is an integer number (51055501004062).

Almost surely, 2^{102111002008123} is an apocalyptic number.

102111002008123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111002008123 is an equidigital number, since it uses as much as digits as its factorization.

102111002008123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 102111002008123 its reverse (321800200111201), we get a palindrome (423911202119324).

The spelling of 102111002008123 in words is "one hundred two trillion, one hundred eleven billion, two million, eight thousand, one hundred twenty-three".