222212 has 12 divisors (see below), whose sum is σ = 394716. Its totient is φ = 109440.

The previous prime is 222199. The next prime is 222247. The reversal of 222212 is 212222.

222212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42436 + 179776 = 206^2 + 424^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 222193 and 222202.

It is an unprimeable number.

222212 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89 + ... + 672.

It is an arithmetic number, because the mean of its divisors is an integer number (32893).

2²²²²¹² is an apocalyptic number.

It is an amenable number.

222212 is a deficient number, since it is larger than the sum of its proper divisors (172504).

222212 is a wasteful number, since it uses less digits than its factorization.

222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 836 counting only the distinct ones).

The product of its digits is 32, while the sum is 11.

The square root of 222212 is about 471.3936783624. The cubic root of 222212 is about 60.5697576630.

Adding to 222212 its reverse (212222), we get a palindrome (434434).

It can be divided in two parts, 222 and 212, that added together give a palindrome (434).

The spelling of 222212 in words is "two hundred twenty-two thousand, two hundred twelve", and thus it is an iban number.