206228185106 has 4 divisors (see below), whose sum is σ = 309342277662. Its totient is φ = 103114092552.

The previous prime is 206228185103. The next prime is 206228185109. The reversal of 206228185106 is 601581822602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (206228185103) and next prime (206228185109).

It can be written as a sum of positive squares in only one way, i.e., 195032640625 + 11195544481 = 441625^2 + 105809^2 .

It is a super-2 number, since 2×206228185106² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206228185103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51557046275 + ... + 51557046278.

Almost surely, 2^206228185106 is an apocalyptic number.

206228185106 is a deficient number, since it is larger than the sum of its proper divisors (103114092556).

206228185106 is a wasteful number, since it uses less digits than its factorization.

206228185106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103114092555.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 206228185106 in words is "two hundred six billion, two hundred twenty-eight million, one hundred eighty-five thousand, one hundred six".