210001122209 has 8 divisors (see below), whose sum is σ = 211317581760. Its totient is φ = 208685005776.

The previous prime is 210001122197. The next prime is 210001122223. The reversal of 210001122209 is 902221100012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210001122209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210001122269) 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 7 ways as a sum of consecutive naturals, for example, 1202519 + ... + 1366035.

It is an arithmetic number, because the mean of its divisors is an integer number (26414697720).

Almost surely, 2^210001122209 is an apocalyptic number.

It is an amenable number.

210001122209 is a deficient number, since it is larger than the sum of its proper divisors (1316459551).

210001122209 is a wasteful number, since it uses less digits than its factorization.

210001122209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171559.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 210001122209 in words is "two hundred ten billion, one million, one hundred twenty-two thousand, two hundred nine".