102168811 has 2 divisors, whose sum is σ = 102168812. Its totient is φ = 102168810.

The previous prime is 102168809. The next prime is 102168851. The reversal of 102168811 is 118861201.

It is a weak prime.

It is an emirp because it is prime and its reverse (118861201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102168811 - 2¹ = 102168809 is a prime.

Together with 102168809, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102168811.

It is not a weakly prime, because it can be changed into another prime (102168851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51084405 + 51084406.

It is an arithmetic number, because the mean of its divisors is an integer number (51084406).

Almost surely, 2^102168811 is an apocalyptic number.

102168811 is a deficient number, since it is larger than the sum of its proper divisors (1).

102168811 is an equidigital number, since it uses as much as digits as its factorization.

102168811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 102168811 is about 10107.8588731739. The cubic root of 102168811 is about 467.4904890970.

The spelling of 102168811 in words is "one hundred two million, one hundred sixty-eight thousand, eight hundred eleven".