206884121 has 2 divisors, whose sum is σ = 206884122. Its totient is φ = 206884120.

The previous prime is 206884099. The next prime is 206884127. The reversal of 206884121 is 121488602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198246400 + 8637721 = 14080^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 206884121 - 2¹⁰ = 206883097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206884127) by changing a digit.

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 as a sum of consecutive naturals, namely, 103442060 + 103442061.

It is an arithmetic number, because the mean of its divisors is an integer number (103442061).

Almost surely, 2^206884121 is an apocalyptic number.

It is an amenable number.

206884121 is a deficient number, since it is larger than the sum of its proper divisors (1).

206884121 is an equidigital number, since it uses as much as digits as its factorization.

206884121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 206884121 is about 14383.4669325584. The cubic root of 206884121 is about 591.4377660965.

The spelling of 206884121 in words is "two hundred six million, eight hundred eighty-four thousand, one hundred twenty-one".