222311212 has 6 divisors (see below), whose sum is σ = 389044628. Its totient is φ = 111155604.

The previous prime is 222311189. The next prime is 222311213. The reversal of 222311212 is 212113222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222311213) 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, 27788898 + ... + 27788905.

Almost surely, 2^222311212 is an apocalyptic number.

It is an amenable number.

222311212 is a deficient number, since it is larger than the sum of its proper divisors (166733416).

222311212 is a wasteful number, since it uses less digits than its factorization.

222311212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55577807 (or 55577805 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 222311212 is about 14910.1043591251. The cubic root of 222311212 is about 605.7877060661.

Adding to 222311212 its reverse (212113222), we get a palindrome (434424434).

The spelling of 222311212 in words is "two hundred twenty-two million, three hundred eleven thousand, two hundred twelve".