211121000212 has 12 divisors (see below), whose sum is σ = 369465071220. Its totient is φ = 105559551296.

The previous prime is 211121000159. The next prime is 211121000213. The reversal of 211121000212 is 212000121112.

211121000212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 89594856976 + 121526143236 = 299324^2 + 348606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211121000192 and 211121000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121000213) 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 3 ways as a sum of consecutive naturals, for example, 564558 + ... + 860794.

It is an arithmetic number, because the mean of its divisors is an integer number (30788755935).

Almost surely, 2^211121000212 is an apocalyptic number.

It is an amenable number.

211121000212 is a deficient number, since it is larger than the sum of its proper divisors (158344071008).

211121000212 is a wasteful number, since it uses less digits than its factorization.

211121000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474410 (or 474408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211121000212 its reverse (212000121112), we get a palindrome (423121121324).

The spelling of 211121000212 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred twelve", and thus it is an aban number.