211222221212222 has 64 divisors (see below), whose sum is σ = 376903728267264. Its totient is φ = 87791521503840.

The previous prime is 211222221212203. The next prime is 211222221212243. The reversal of 211222221212222 is 222212122222112.

It is a super-2 number, since 2×211222221212222² (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 = 211222221212191 and 211222221212200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102251798 + ... + 104297049.

It is an arithmetic number, because the mean of its divisors is an integer number (5889120754176).

Almost surely, 2^{211222221212222} is an apocalyptic number.

211222221212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211222221212222 is a deficient number, since it is larger than the sum of its proper divisors (165681507055042).

211222221212222 is a wasteful number, since it uses less digits than its factorization.

211222221212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206548973.

The product of its digits is 2048, while the sum is 26.

Adding to 211222221212222 its reverse (222212122222112), we get a palindrome (433434343434334).

The spelling of 211222221212222 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty-two".