213304222 has 32 divisors (see below), whose sum is σ = 356983200. Its totient is φ = 95155200.

The previous prime is 213304207. The next prime is 213304229. The reversal of 213304222 is 222403312.

It is a super-2 number, since 2×213304222² = 90997382246050568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 213304222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213304229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42822 + ... + 47542.

It is an arithmetic number, because the mean of its divisors is an integer number (11155725).

Almost surely, 2^213304222 is an apocalyptic number.

213304222 is a deficient number, since it is larger than the sum of its proper divisors (143678978).

213304222 is a wasteful number, since it uses less digits than its factorization.

213304222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 213304222 is about 14604.9382744331. The cubic root of 213304222 is about 597.4934525405.

Adding to 213304222 its reverse (222403312), we get a palindrome (435707534).

It can be divided in two parts, 21330 and 4222, that added together give a palindrome (25552).

The spelling of 213304222 in words is "two hundred thirteen million, three hundred four thousand, two hundred twenty-two".