211000222009 has 16 divisors (see below), whose sum is σ = 214523821440. Its totient is φ = 207509401600.

The previous prime is 211000221997. The next prime is 211000222021. The reversal of 211000222009 is 900222000112.

It is an interprime number because it is at equal distance from previous prime (211000221997) and next prime (211000222021).

It is a cyclic number.

It is not a de Polignac number, because 211000222009 - 2²⁷ = 210866004281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211000222079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9307242 + ... + 9329884.

It is an arithmetic number, because the mean of its divisors is an integer number (13407738840).

Almost surely, 2^211000222009 is an apocalyptic number.

It is an amenable number.

211000222009 is a deficient number, since it is larger than the sum of its proper divisors (3523599431).

211000222009 is a wasteful number, since it uses less digits than its factorization.

211000222009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23360.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 211000222009 in words is "two hundred eleven billion, two hundred twenty-two thousand, nine".