22271265 has 12 divisors (see below), whose sum is σ = 38603604. Its totient is φ = 11877984.

The previous prime is 22271239. The next prime is 22271273. The reversal of 22271265 is 56217222.

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 14470416 = 2793^2 + 3804^2 .

It is not a de Polignac number, because 22271265 - 2⁶ = 22271201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247414 + ... + 247503.

It is an arithmetic number, because the mean of its divisors is an integer number (3216967).

Almost surely, 2^22271265 is an apocalyptic number.

It is an amenable number.

22271265 is a deficient number, since it is larger than the sum of its proper divisors (16332339).

22271265 is a wasteful number, since it uses less digits than its factorization.

22271265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494928 (or 494925 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 22271265 is about 4719.2441132029. The cubic root of 22271265 is about 281.3508912110.

Adding to 22271265 its reverse (56217222), we get a palindrome (78488487).

The spelling of 22271265 in words is "twenty-two million, two hundred seventy-one thousand, two hundred sixty-five".