222340249 has 2 divisors, whose sum is σ = 222340250. Its totient is φ = 222340248.

The previous prime is 222340243. The next prime is 222340259. The reversal of 222340249 is 942043222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140256649 + 82083600 = 11843^2 + 9060^2 .

It is a cyclic number.

It is not a de Polignac number, because 222340249 - 2¹⁹ = 221815961 is a prime.

It is equal to p_12244348 and since 222340249 and 12244348 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (222340243) 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, 111170124 + 111170125.

It is an arithmetic number, because the mean of its divisors is an integer number (111170125).

Almost surely, 2^222340249 is an apocalyptic number.

It is an amenable number.

222340249 is a deficient number, since it is larger than the sum of its proper divisors (1).

222340249 is an equidigital number, since it uses as much as digits as its factorization.

222340249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 222340249 is about 14911.0780629705. The cubic root of 222340249 is about 605.8140797424.

The spelling of 222340249 in words is "two hundred twenty-two million, three hundred forty thousand, two hundred forty-nine".