22212212222111 has 4 divisors (see below), whose sum is σ = 22212317180592. Its totient is φ = 22212107263632.

The previous prime is 22212212222107. The next prime is 22212212222141. The reversal of 22212212222111 is 11122221221222.

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 22212212222111 - 2² = 22212212222107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212212222141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52161155 + ... + 52585268.

It is an arithmetic number, because the mean of its divisors is an integer number (5553079295148).

Almost surely, 2^{22212212222111} is an apocalyptic number.

22212212222111 is a deficient number, since it is larger than the sum of its proper divisors (104958481).

22212212222111 is a wasteful number, since it uses less digits than its factorization.

22212212222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104958480.

The product of its digits is 512, while the sum is 23.

Adding to 22212212222111 its reverse (11122221221222), we get a palindrome (33334433443333).

The spelling of 22212212222111 in words is "twenty-two trillion, two hundred twelve billion, two hundred twelve million, two hundred twenty-two thousand, one hundred eleven".