212223404 has 24 divisors (see below), whose sum is σ = 381586128. Its totient is φ = 103219200.

The previous prime is 212223397. The next prime is 212223409. The reversal of 212223404 is 404322212.

It is not an unprimeable number, because it can be changed into a prime (212223409) 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 7 ways as a sum of consecutive naturals, for example, 41804 + ... + 46604.

It is an arithmetic number, because the mean of its divisors is an integer number (15899422).

Almost surely, 2^212223404 is an apocalyptic number.

It is an amenable number.

212223404 is a deficient number, since it is larger than the sum of its proper divisors (169362724).

212223404 is a wasteful number, since it uses less digits than its factorization.

212223404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105 (or 5103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 212223404 is about 14567.8894833809. The cubic root of 212223404 is about 596.4825716432.

Adding to 212223404 its reverse (404322212), we get a palindrome (616545616).

The spelling of 212223404 in words is "two hundred twelve million, two hundred twenty-three thousand, four hundred four".