213222166 has 8 divisors (see below), whose sum is σ = 320426064. Its totient is φ = 106413480.

The previous prime is 213222137. The next prime is 213222169. The reversal of 213222166 is 661222312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 213222166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213222169) 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 3 ways as a sum of consecutive naturals, for example, 97450 + ... + 99613.

It is an arithmetic number, because the mean of its divisors is an integer number (40053258).

Almost surely, 2^213222166 is an apocalyptic number.

213222166 is a deficient number, since it is larger than the sum of its proper divisors (107203898).

213222166 is a wasteful number, since it uses less digits than its factorization.

213222166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197606.

The product of its digits is 1728, while the sum is 25.

The square root of 213222166 is about 14602.1288174019. The cubic root of 213222166 is about 597.4168261296.

Adding to 213222166 its reverse (661222312), we get a palindrome (874444478).

The spelling of 213222166 in words is "two hundred thirteen million, two hundred twenty-two thousand, one hundred sixty-six".