213311222 has 8 divisors (see below), whose sum is σ = 320299272. Its totient is φ = 106544800.

The previous prime is 213311221. The next prime is 213311311. The reversal of 213311222 is 222113312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213311222² = 91003354862266568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213311222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213311221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52979 + ... + 56862.

It is an arithmetic number, because the mean of its divisors is an integer number (40037409).

Almost surely, 2^213311222 is an apocalyptic number.

213311222 is a deficient number, since it is larger than the sum of its proper divisors (106988050).

213311222 is a wasteful number, since it uses less digits than its factorization.

213311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110814.

The product of its digits is 144, while the sum is 17.

The square root of 213311222 is about 14605.1779174374. The cubic root of 213311222 is about 597.4999884456.

Adding to 213311222 its reverse (222113312), we get a palindrome (435424534).

The spelling of 213311222 in words is "two hundred thirteen million, three hundred eleven thousand, two hundred twenty-two".