22226249 has 2 divisors, whose sum is σ = 22226250. Its totient is φ = 22226248.

The previous prime is 22226231. The next prime is 22226261. The reversal of 22226249 is 94262222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 2866249 = 4400^2 + 1693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22226249 is a prime.

It is a super-2 number, since 2×22226249² = 988012289220002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22226279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11113124 + 11113125.

It is an arithmetic number, because the mean of its divisors is an integer number (11113125).

Almost surely, 2^22226249 is an apocalyptic number.

It is an amenable number.

22226249 is a deficient number, since it is larger than the sum of its proper divisors (1).

22226249 is an equidigital number, since it uses as much as digits as its factorization.

22226249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 22226249 is about 4714.4722928447. The cubic root of 22226249 is about 281.1612023212.

The spelling of 22226249 in words is "twenty-two million, two hundred twenty-six thousand, two hundred forty-nine".