102112101997 has 2 divisors, whose sum is σ = 102112101998. Its totient is φ = 102112101996.

The previous prime is 102112101979. The next prime is 102112102013. The reversal of 102112101997 is 799101211201.

Together with previous prime (102112101979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53910338596 + 48201763401 = 232186^2 + 219549^2 .

It is a cyclic number.

It is not a de Polignac number, because 102112101997 - 2¹⁹ = 102111577709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102112101967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51056050998 + 51056050999.

It is an arithmetic number, because the mean of its divisors is an integer number (51056050999).

Almost surely, 2^102112101997 is an apocalyptic number.

It is an amenable number.

102112101997 is a deficient number, since it is larger than the sum of its proper divisors (1).

102112101997 is an equidigital number, since it uses as much as digits as its factorization.

102112101997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 102112101997 in words is "one hundred two billion, one hundred twelve million, one hundred one thousand, nine hundred ninety-seven".