212323222 has 8 divisors (see below), whose sum is σ = 319246200. Its totient is φ = 105907824.

The previous prime is 212323219. The next prime is 212323229. The reversal of 212323222 is 222323212.

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

It is a super-2 number, since 2×212323222² = 90162301200922568, 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 212323222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212323229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125847 + ... + 127522.

It is an arithmetic number, because the mean of its divisors is an integer number (39905775).

Almost surely, 2^212323222 is an apocalyptic number.

212323222 is a deficient number, since it is larger than the sum of its proper divisors (106922978).

212323222 is a wasteful number, since it uses less digits than its factorization.

212323222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253790.

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

The square root of 212323222 is about 14571.3150401740. The cubic root of 212323222 is about 596.5760743137.

Adding to 212323222 its reverse (222323212), we get a palindrome (434646434).

The spelling of 212323222 in words is "two hundred twelve million, three hundred twenty-three thousand, two hundred twenty-two".