206722141 has 2 divisors, whose sum is σ = 206722142. Its totient is φ = 206722140.

The previous prime is 206722129. The next prime is 206722163. The reversal of 206722141 is 141227602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200817241 + 5904900 = 14171^2 + 2430^2 .

It is a cyclic number.

It is not a de Polignac number, because 206722141 - 2⁷ = 206722013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206722111) 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, 103361070 + 103361071.

It is an arithmetic number, because the mean of its divisors is an integer number (103361071).

Almost surely, 2^206722141 is an apocalyptic number.

It is an amenable number.

206722141 is a deficient number, since it is larger than the sum of its proper divisors (1).

206722141 is an equidigital number, since it uses as much as digits as its factorization.

206722141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 206722141 is about 14377.8350595630. The cubic root of 206722141 is about 591.2833703213.

Adding to 206722141 its reverse (141227602), we get a palindrome (347949743).

The spelling of 206722141 in words is "two hundred six million, seven hundred twenty-two thousand, one hundred forty-one".