22275229 has 4 divisors (see below), whose sum is σ = 22286880. Its totient is φ = 22263580.

The previous prime is 22275223. The next prime is 22275263. The reversal of 22275229 is 92257222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22275229 - 2⁷ = 22275101 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 22275229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22275223) 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, 2209 + ... + 7030.

It is an arithmetic number, because the mean of its divisors is an integer number (5571720).

Almost surely, 2^22275229 is an apocalyptic number.

It is an amenable number.

22275229 is a deficient number, since it is larger than the sum of its proper divisors (11651).

22275229 is an equidigital number, since it uses as much as digits as its factorization.

22275229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650.

The product of its digits is 10080, while the sum is 31.

The square root of 22275229 is about 4719.6640770292. The cubic root of 22275229 is about 281.3675825061.

The spelling of 22275229 in words is "twenty-two million, two hundred seventy-five thousand, two hundred twenty-nine".