212221100110222 has 16 divisors (see below), whose sum is σ = 376352689851360. Its totient is φ = 87815627631648.

The previous prime is 212221100110213. The next prime is 212221100110223. The reversal of 212221100110222 is 222011001122212.

It is a self number, because there is not a number n which added to its sum of digits gives 212221100110222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221100110223) 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 7 ways as a sum of consecutive naturals, for example, 261356034213 + ... + 261356035024.

It is an arithmetic number, because the mean of its divisors is an integer number (23522043115710).

Almost surely, 2^{212221100110222} is an apocalyptic number.

212221100110222 is a deficient number, since it is larger than the sum of its proper divisors (164131589741138).

212221100110222 is a wasteful number, since it uses less digits than its factorization.

212221100110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522712069275.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212221100110222 its reverse (222011001122212), we get a palindrome (434232101232434).

The spelling of 212221100110222 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred million, one hundred ten thousand, two hundred twenty-two".