205222007 has 4 divisors (see below), whose sum is σ = 205749960. Its totient is φ = 204694056.

The previous prime is 205221997. The next prime is 205222019. The reversal of 205222007 is 700222502.

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

It is a cyclic number.

It is not a de Polignac number, because 205222007 - 2¹⁸ = 204959863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205222007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205222037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263393 + ... + 264170.

It is an arithmetic number, because the mean of its divisors is an integer number (51437490).

Almost surely, 2^205222007 is an apocalyptic number.

205222007 is a deficient number, since it is larger than the sum of its proper divisors (527953).

205222007 is an equidigital number, since it uses as much as digits as its factorization.

205222007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527952.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 205222007 is about 14325.5717861452. The cubic root of 205222007 is about 589.8496284409.

Adding to 205222007 its reverse (700222502), we get a palindrome (905444509).

The spelling of 205222007 in words is "two hundred five million, two hundred twenty-two thousand, seven".