212211212 has 36 divisors (see below), whose sum is σ = 387769200. Its totient is φ = 101610432.

The previous prime is 212211193. The next prime is 212211269. The reversal of 212211212 is 212112212.

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 669278 + ... + 669594.

Almost surely, 2^212211212 is an apocalyptic number.

It is an amenable number.

212211212 is a deficient number, since it is larger than the sum of its proper divisors (175557988).

212211212 is a wasteful number, since it uses less digits than its factorization.

212211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 547 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 212211212 is about 14567.4710227960. The cubic root of 212211212 is about 596.4711490030.

Adding to 212211212 its reverse (212112212), we get a palindrome (424323424).

The spelling of 212211212 in words is "two hundred twelve million, two hundred eleven thousand, two hundred twelve".