102205205 has 8 divisors (see below), whose sum is σ = 123103800. Its totient is φ = 81459136.

The previous prime is 102205189. The next prime is 102205247. The reversal of 102205205 is 502502201.

It can be written as a sum of positive squares in 4 ways, for example, as 4571044 + 97634161 = 2138^2 + 9881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102205205 - 2⁴ = 102205189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36650 + ... + 39339.

It is an arithmetic number, because the mean of its divisors is an integer number (15387975).

Almost surely, 2^102205205 is an apocalyptic number.

It is an amenable number.

102205205 is a deficient number, since it is larger than the sum of its proper divisors (20898595).

102205205 is an equidigital number, since it uses as much as digits as its factorization.

102205205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76263.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 102205205 is about 10109.6589952382. The cubic root of 102205205 is about 467.5459914527.

Adding to 102205205 its reverse (502502201), we get a palindrome (604707406).

The spelling of 102205205 in words is "one hundred two million, two hundred five thousand, two hundred five".