211242323209 has 8 divisors (see below), whose sum is σ = 222443893440. Its totient is φ = 200049108336.

The previous prime is 211242323203. The next prime is 211242323213. The reversal of 211242323209 is 902323242112.

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

It is a cyclic number.

It is not a de Polignac number, because 211242323209 - 2⁷ = 211242323081 is a prime.

It is a super-2 number, since 2×211242323209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211242323203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2036902 + ... + 2138095.

It is an arithmetic number, because the mean of its divisors is an integer number (27805486680).

Almost surely, 2^211242323209 is an apocalyptic number.

It is an amenable number.

211242323209 is a deficient number, since it is larger than the sum of its proper divisors (11201570231).

211242323209 is a wasteful number, since it uses less digits than its factorization.

211242323209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177679.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 211242323209 in words is "two hundred eleven billion, two hundred forty-two million, three hundred twenty-three thousand, two hundred nine".