211000121208 has 112 divisors (see below), whose sum is σ = 594737806200. Its totient is φ = 70147062720.

The previous prime is 211000121201. The next prime is 211000121237. The reversal of 211000121208 is 802121000112.

It is a super-2 number, since 2×211000121208² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000121201) 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 27 ways as a sum of consecutive naturals, for example, 2162598 + ... + 2258058.

Almost surely, 2^211000121208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211000121208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297368903100).

211000121208 is an abundant number, since it is smaller than the sum of its proper divisors (383737684992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211000121208 is an equidigital number, since it uses as much as digits as its factorization.

211000121208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95864 (or 95845 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The spelling of 211000121208 in words is "two hundred eleven billion, one hundred twenty-one thousand, two hundred eight".