211144222 has 4 divisors (see below), whose sum is σ = 316716336. Its totient is φ = 105572110.

The previous prime is 211144217. The next prime is 211144247. The reversal of 211144222 is 222441112.

211144222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211144222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52786054 + ... + 52786057.

It is an arithmetic number, because the mean of its divisors is an integer number (79179084).

Almost surely, 2^211144222 is an apocalyptic number.

211144222 is a deficient number, since it is larger than the sum of its proper divisors (105572114).

211144222 is a wasteful number, since it uses less digits than its factorization.

211144222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105572113.

The product of its digits is 256, while the sum is 19.

The square root of 211144222 is about 14530.8025242930. The cubic root of 211144222 is about 595.4697906842.

Adding to 211144222 its reverse (222441112), we get a palindrome (433585334).

The spelling of 211144222 in words is "two hundred eleven million, one hundred forty-four thousand, two hundred twenty-two".