222340305 has 32 divisors (see below), whose sum is σ = 388758528. Its totient is φ = 107614400.

The previous prime is 222340301. The next prime is 222340319. The reversal of 222340305 is 503043222.

It is not a de Polignac number, because 222340305 - 2² = 222340301 is a prime.

It is a super-2 number, since 2×222340305² = 98870422454986050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222340301) 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 in 31 ways as a sum of consecutive naturals, for example, 169462 + ... + 170768.

It is an arithmetic number, because the mean of its divisors is an integer number (12148704).

Almost surely, 2^222340305 is an apocalyptic number.

It is an amenable number.

222340305 is a deficient number, since it is larger than the sum of its proper divisors (166418223).

222340305 is a wasteful number, since it uses less digits than its factorization.

222340305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 222340305 is about 14911.0799407689. The cubic root of 222340305 is about 605.8141306037.

Adding to 222340305 its reverse (503043222), we get a palindrome (725383527).

The spelling of 222340305 in words is "two hundred twenty-two million, three hundred forty thousand, three hundred five".