205213227 has 8 divisors (see below), whose sum is σ = 273707520. Its totient is φ = 136763880.

The previous prime is 205213219. The next prime is 205213247. The reversal of 205213227 is 722312502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205213227 - 2³ = 205213219 is a prime.

It is a super-2 number, since 2×205213227² = 84224937071507058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205213197 and 205213206.

It is not an unprimeable number, because it can be changed into a prime (205213247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1474 + ... + 20312.

It is an arithmetic number, because the mean of its divisors is an integer number (34213440).

Almost surely, 2^205213227 is an apocalyptic number.

205213227 is a deficient number, since it is larger than the sum of its proper divisors (68494293).

205213227 is a wasteful number, since it uses less digits than its factorization.

205213227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22473.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 205213227 is about 14325.2653378567. The cubic root of 205213227 is about 589.8412164880.

Adding to 205213227 its reverse (722312502), we get a palindrome (927525729).

The spelling of 205213227 in words is "two hundred five million, two hundred thirteen thousand, two hundred twenty-seven".