211222212111222 has 32 divisors (see below), whose sum is σ = 454942110884352. Its totient is φ = 64991169634464.

The previous prime is 211222212111221. The next prime is 211222212111247. The reversal of 211222212111222 is 222111212222112.

It is a super-2 number, since 2×211222212111222² (a number of 29 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 211222212111192 and 211222212111201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222212111221) 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 15 ways as a sum of consecutive naturals, for example, 12743043 + ... + 24183249.

It is an arithmetic number, because the mean of its divisors is an integer number (14216940965136).

Almost surely, 2^{211222212111222} is an apocalyptic number.

211222212111222 is an abundant number, since it is smaller than the sum of its proper divisors (243719898773130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211222212111222 is a wasteful number, since it uses less digits than its factorization.

211222212111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11676932.

The product of its digits is 512, while the sum is 24.

Adding to 211222212111222 its reverse (222111212222112), we get a palindrome (433333424333334).

The spelling of 211222212111222 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-two".