206662221106 has 16 divisors (see below), whose sum is σ = 339651296640. Its totient is φ = 93527164080.

The previous prime is 206662220993. The next prime is 206662221107. The reversal of 206662221106 is 601122266602.

It is not an unprimeable number, because it can be changed into a prime (206662221107) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 20505306 + ... + 20515381.

It is an arithmetic number, because the mean of its divisors is an integer number (21228206040).

Almost surely, 2^206662221106 is an apocalyptic number.

206662221106 is a deficient number, since it is larger than the sum of its proper divisors (132989075534).

206662221106 is a wasteful number, since it uses less digits than its factorization.

206662221106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41020929.

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 206662221106 its reverse (601122266602), we get a palindrome (807784487708).

The spelling of 206662221106 in words is "two hundred six billion, six hundred sixty-two million, two hundred twenty-one thousand, one hundred six".