22071205 has 8 divisors (see below), whose sum is σ = 28522872. Its totient is φ = 16298688.

The previous prime is 22071193. The next prime is 22071209. The reversal of 22071205 is 50217022.

It is a Cunningham number, because it is equal to 4698²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 22071204 = 1^2 + 4698^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22071205 - 2⁵ = 22071173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22071209) 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, 169714 + ... + 169843.

It is an arithmetic number, because the mean of its divisors is an integer number (3565359).

Almost surely, 2^22071205 is an apocalyptic number.

It is an amenable number.

22071205 is a deficient number, since it is larger than the sum of its proper divisors (6451667).

22071205 is a wasteful number, since it uses less digits than its factorization.

22071205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339575.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 22071205 is about 4698.0001064283. Note that the first 3 decimals coincide. The cubic root of 22071205 is about 280.5059093424.

Adding to 22071205 its reverse (50217022), we get a palindrome (72288227).

The spelling of 22071205 in words is "twenty-two million, seventy-one thousand, two hundred five".