211022222012209 has 4 divisors (see below), whose sum is σ = 211022587796004. Its totient is φ = 211021856228416.

The previous prime is 211022222012083. The next prime is 211022222012227. The reversal of 211022222012209 is 902210222220112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28288601602209 + 182733620410000 = 5318703^2 + 13517900^2 .

It is a cyclic number.

It is not a de Polignac number, because 211022222012209 - 2¹¹ = 211022222010161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211022022012209) 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, 182025172 + ... + 183180805.

It is an arithmetic number, because the mean of its divisors is an integer number (52755646949001).

Almost surely, 2^{211022222012209} is an apocalyptic number.

It is an amenable number.

211022222012209 is a deficient number, since it is larger than the sum of its proper divisors (365783795).

211022222012209 is an equidigital number, since it uses as much as digits as its factorization.

211022222012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365783794.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 211022222012209 in words is "two hundred eleven trillion, twenty-two billion, two hundred twenty-two million, twelve thousand, two hundred nine".