222120305 has 24 divisors (see below), whose sum is σ = 297162432. Its totient is φ = 159236000.

The previous prime is 222120281. The next prime is 222120307. The reversal of 222120305 is 503021222.

It is not a de Polignac number, because 222120305 - 2⁸ = 222120049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222120307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40370 + ... + 45540.

It is an arithmetic number, because the mean of its divisors is an integer number (12381768).

Almost surely, 2^222120305 is an apocalyptic number.

It is an amenable number.

222120305 is a deficient number, since it is larger than the sum of its proper divisors (75042127).

222120305 is a wasteful number, since it uses less digits than its factorization.

222120305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269 (or 5258 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 222120305 is about 14903.7010504103. The cubic root of 222120305 is about 605.6142521762.

Adding to 222120305 its reverse (503021222), we get a palindrome (725141527).

The spelling of 222120305 in words is "two hundred twenty-two million, one hundred twenty thousand, three hundred five".