211312222122 has 16 divisors (see below), whose sum is σ = 431616454272. Its totient is φ = 68938739040.

The previous prime is 211312222109. The next prime is 211312222171. The reversal of 211312222122 is 221222213112.

211312222122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374666779 + ... + 374667342.

It is an arithmetic number, because the mean of its divisors is an integer number (26976028392).

Almost surely, 2^211312222122 is an apocalyptic number.

211312222122 is an abundant number, since it is smaller than the sum of its proper divisors (220304232150).

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

211312222122 is a wasteful number, since it uses less digits than its factorization.

211312222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749334173.

The product of its digits is 384, while the sum is 21.

Adding to 211312222122 its reverse (221222213112), we get a palindrome (432534435234).

The spelling of 211312222122 in words is "two hundred eleven billion, three hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".