22273217 has 2 divisors, whose sum is σ = 22273218. Its totient is φ = 22273216.

The previous prime is 22273201. The next prime is 22273243. The reversal of 22273217 is 71237222.

It is an a-pointer prime, because the next prime (22273243) can be obtained adding 22273217 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15085456 + 7187761 = 3884^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 22273217 - 2⁴ = 22273201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22273117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11136608 + 11136609.

It is an arithmetic number, because the mean of its divisors is an integer number (11136609).

Almost surely, 2^22273217 is an apocalyptic number.

It is an amenable number.

22273217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22273217 is an equidigital number, since it uses as much as digits as its factorization.

22273217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 26.

The square root of 22273217 is about 4719.4509214526. The cubic root of 22273217 is about 281.3591107844.

The spelling of 22273217 in words is "twenty-two million, two hundred seventy-three thousand, two hundred seventeen".