102102000991 has 2 divisors, whose sum is σ = 102102000992. Its totient is φ = 102102000990.

The previous prime is 102102000983. The next prime is 102102001019. The reversal of 102102000991 is 199000201201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102102000991 - 2³ = 102102000983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102102000911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051000495 + 51051000496.

It is an arithmetic number, because the mean of its divisors is an integer number (51051000496).

Almost surely, 2^102102000991 is an apocalyptic number.

102102000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102000991 is an equidigital number, since it uses as much as digits as its factorization.

102102000991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 102102000991 in words is "one hundred two billion, one hundred two million, nine hundred ninety-one", and thus it is an aban number.