22242211 has 2 divisors, whose sum is σ = 22242212. Its totient is φ = 22242210.

The previous prime is 22242203. The next prime is 22242251. The reversal of 22242211 is 11224222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22242211 - 2³ = 22242203 is a prime.

It is not a weakly prime, because it can be changed into another prime (22242251) 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, 11121105 + 11121106.

It is an arithmetic number, because the mean of its divisors is an integer number (11121106).

Almost surely, 2^22242211 is an apocalyptic number.

22242211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242211 is an equidigital number, since it uses as much as digits as its factorization.

22242211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 16.

The square root of 22242211 is about 4716.1648614102. The cubic root of 22242211 is about 281.2284924459.

Adding to 22242211 its reverse (11224222), we get a palindrome (33466433).

It can be divided in two parts, 2224221 and 1, that added together give a palindrome (2224222).

The spelling of 22242211 in words is "twenty-two million, two hundred forty-two thousand, two hundred eleven".