206040022 has 4 divisors (see below), whose sum is σ = 309060036. Its totient is φ = 103020010.

The previous prime is 206040011. The next prime is 206040071. The reversal of 206040022 is 220040602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220040602 = 2 ⋅110020301.

It is a junction number, because it is equal to n+sod(n) for n = 206039978 and 206040005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51510004 + ... + 51510007.

It is an arithmetic number, because the mean of its divisors is an integer number (77265009).

Almost surely, 2^206040022 is an apocalyptic number.

206040022 is a deficient number, since it is larger than the sum of its proper divisors (103020014).

206040022 is a wasteful number, since it uses less digits than its factorization.

206040022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103020013.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 206040022 is about 14354.0942591304. The cubic root of 206040022 is about 590.6323030628.

Adding to 206040022 its reverse (220040602), we get a palindrome (426080624).

The spelling of 206040022 in words is "two hundred six million, forty thousand, twenty-two".