222112222122211 has 4 divisors (see below), whose sum is σ = 223396107799392. Its totient is φ = 220828336445032.

The previous prime is 222112222122151. The next prime is 222112222122229. The reversal of 222112222122211 is 112221222211222.

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

It is a cyclic number.

It is not a de Polignac number, because 222112222122211 - 2⁷ = 222112222122083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222112222222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641942838331 + ... + 641942838676.

It is an arithmetic number, because the mean of its divisors is an integer number (55849026949848).

Almost surely, 2^{222112222122211} is an apocalyptic number.

222112222122211 is a deficient number, since it is larger than the sum of its proper divisors (1283885677181).

222112222122211 is a wasteful number, since it uses less digits than its factorization.

222112222122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283885677180.

The product of its digits is 1024, while the sum is 25.

Adding to 222112222122211 its reverse (112221222211222), we get a palindrome (334333444333433).

The spelling of 222112222122211 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".