211330222 has 8 divisors (see below), whose sum is σ = 321460272. Its totient is φ = 104176800.

The previous prime is 211330211. The next prime is 211330267. The reversal of 211330222 is 222033112.

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

It is a junction number, because it is equal to n+sod(n) for n = 211330196 and 211330205.

It is a congruent number.

It is an unprimeable number.

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, 743979 + ... + 744262.

It is an arithmetic number, because the mean of its divisors is an integer number (40182534).

Almost surely, 2^211330222 is an apocalyptic number.

211330222 is a deficient number, since it is larger than the sum of its proper divisors (110130050).

211330222 is a wasteful number, since it uses less digits than its factorization.

211330222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488314.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 211330222 is about 14537.2013124948. The cubic root of 211330222 is about 595.6445920172.

Adding to 211330222 its reverse (222033112), we get a palindrome (433363334).

The spelling of 211330222 in words is "two hundred eleven million, three hundred thirty thousand, two hundred twenty-two".