211223223009 has 24 divisors (see below), whose sum is σ = 316388409792. Its totient is φ = 135679445280.

The previous prime is 211223222999. The next prime is 211223223023. The reversal of 211223223009 is 900322322112.

211223223009 is a `hidden beast` number, since 2 + 11 + 22 + 322 + 300 + 9 = 666.

211223223009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211223223009 - 2¹³ = 211223214817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211223221009) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3044847 + ... + 3113444.

It is an arithmetic number, because the mean of its divisors is an integer number (13182850408).

Almost surely, 2^211223223009 is an apocalyptic number.

It is an amenable number.

211223223009 is a deficient number, since it is larger than the sum of its proper divisors (105165186783).

211223223009 is a wasteful number, since it uses less digits than its factorization.

211223223009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158437 (or 6158434 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 211223223009 in words is "two hundred eleven billion, two hundred twenty-three million, two hundred twenty-three thousand, nine".