212211111122222 has 8 divisors (see below), whose sum is σ = 335070175456200. Its totient is φ = 100521052636824.

The previous prime is 212211111122177. The next prime is 212211111122299. The reversal of 212211111122222 is 222221111112212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 2792251462097 + ... + 2792251462172.

It is an arithmetic number, because the mean of its divisors is an integer number (41883771932025).

Almost surely, 2^{212211111122222} is an apocalyptic number.

212211111122222 is a deficient number, since it is larger than the sum of its proper divisors (122859064333978).

212211111122222 is a wasteful number, since it uses less digits than its factorization.

212211111122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584502924290.

The product of its digits is 256, while the sum is 23.

Adding to 212211111122222 its reverse (222221111112212), we get a palindrome (434432222234434).

The spelling of 212211111122222 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-two".