206212103 has 2 divisors, whose sum is σ = 206212104. Its totient is φ = 206212102.

The previous prime is 206212087. The next prime is 206212109. The reversal of 206212103 is 301212602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206212103 - 2⁴ = 206212087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206212109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103106051 + 103106052.

It is an arithmetic number, because the mean of its divisors is an integer number (103106052).

Almost surely, 2^206212103 is an apocalyptic number.

206212103 is a deficient number, since it is larger than the sum of its proper divisors (1).

206212103 is an equidigital number, since it uses as much as digits as its factorization.

206212103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 206212103 is about 14360.0871515461. The cubic root of 206212103 is about 590.7966858762.

Adding to 206212103 its reverse (301212602), we get a palindrome (507424705).

The spelling of 206212103 in words is "two hundred six million, two hundred twelve thousand, one hundred three".