212222404 has 12 divisors (see below), whose sum is σ = 383369728. Its totient is φ = 102688200.

The previous prime is 212222401. The next prime is 212222429. The reversal of 212222404 is 404222212.

It is not an unprimeable number, because it can be changed into a prime (212222401) 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 in 3 ways as a sum of consecutive naturals, for example, 855612 + ... + 855859.

Almost surely, 2^212222404 is an apocalyptic number.

It is an amenable number.

212222404 is a deficient number, since it is larger than the sum of its proper divisors (171147324).

212222404 is a wasteful number, since it uses less digits than its factorization.

212222404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711506 (or 1711504 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 212222404 is about 14567.8551612789. The cubic root of 212222404 is about 596.4816347633.

Adding to 212222404 its reverse (404222212), we get a palindrome (616444616).

The spelling of 212222404 in words is "two hundred twelve million, two hundred twenty-two thousand, four hundred four".