102166811 has 2 divisors, whose sum is σ = 102166812. Its totient is φ = 102166810.

The previous prime is 102166777. The next prime is 102166817. The reversal of 102166811 is 118661201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102166811 - 2²² = 97972507 is a prime.

It is not a weakly prime, because it can be changed into another prime (102166817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51083405 + 51083406.

It is an arithmetic number, because the mean of its divisors is an integer number (51083406).

Almost surely, 2^102166811 is an apocalyptic number.

102166811 is a deficient number, since it is larger than the sum of its proper divisors (1).

102166811 is an equidigital number, since it uses as much as digits as its factorization.

102166811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 102166811 is about 10107.7599397690. The cubic root of 102166811 is about 467.4874386322.

The spelling of 102166811 in words is "one hundred two million, one hundred sixty-six thousand, eight hundred eleven".