212222200111 has 4 divisors (see below), whose sum is σ = 212239886992. Its totient is φ = 212204513232.

The previous prime is 212222200097. The next prime is 212222200123. The reversal of 212222200111 is 111002222212.

It is a happy number.

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 212222200111 - 2¹¹ = 212222198063 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 (212222200811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8825430 + ... + 8849443.

It is an arithmetic number, because the mean of its divisors is an integer number (53059971748).

Almost surely, 2^212222200111 is an apocalyptic number.

212222200111 is a deficient number, since it is larger than the sum of its proper divisors (17686881).

212222200111 is a wasteful number, since it uses less digits than its factorization.

212222200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17686880.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212222200111 its reverse (111002222212), we get a palindrome (323224422323).

The spelling of 212222200111 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred thousand, one hundred eleven".