22207205 has 4 divisors (see below), whose sum is σ = 26648652. Its totient is φ = 17765760.

The previous prime is 22207193. The next prime is 22207223. The reversal of 22207205 is 50270222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12609601 + 9597604 = 3551^2 + 3098^2 .

It is not a de Polignac number, because 22207205 - 2⁴ = 22207189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220716 + ... + 2220725.

It is an arithmetic number, because the mean of its divisors is an integer number (6662163).

Almost surely, 2^22207205 is an apocalyptic number.

It is an amenable number.

22207205 is a deficient number, since it is larger than the sum of its proper divisors (4441447).

22207205 is an equidigital number, since it uses as much as digits as its factorization.

22207205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441446.

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

The square root of 22207205 is about 4712.4521217727. The cubic root of 22207205 is about 281.0808774174.

Adding to 22207205 its reverse (50270222), we get a palindrome (72477427).

The spelling of 22207205 in words is "twenty-two million, two hundred seven thousand, two hundred five".