222322221 has 12 divisors (see below), whose sum is σ = 350326080. Its totient is φ = 134740680.

The previous prime is 222322193. The next prime is 222322231. The reversal of 222322221 is 122223222.

It is not a de Polignac number, because 222322221 - 2¹⁸ = 222060077 is a prime.

It is a super-3 number, since 3×222322221³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222322194 and 222322203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222322231) 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 in 11 ways as a sum of consecutive naturals, for example, 1122741 + ... + 1122938.

It is an arithmetic number, because the mean of its divisors is an integer number (29193840).

Almost surely, 2^222322221 is an apocalyptic number.

It is an amenable number.

222322221 is a deficient number, since it is larger than the sum of its proper divisors (128003859).

222322221 is a wasteful number, since it uses less digits than its factorization.

222322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245696 (or 2245693 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 222322221 is about 14910.4735337279. The cubic root of 222322221 is about 605.7977055719.

Adding to 222322221 its reverse (122223222), we get a palindrome (344545443).

The spelling of 222322221 in words is "two hundred twenty-two million, three hundred twenty-two thousand, two hundred twenty-one".