211563212 has 12 divisors (see below), whose sum is σ = 423126480. Its totient is φ = 90669936.

The previous prime is 211563211. The next prime is 211563221. The reversal of 211563212 is 212365112.

211563212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (211563211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3777887 + ... + 3777942.

It is an arithmetic number, because the mean of its divisors is an integer number (35260540).

Almost surely, 2^211563212 is an apocalyptic number.

It is an amenable number.

211563212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211563212 is a wasteful number, since it uses less digits than its factorization.

211563212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555840 (or 7555838 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 211563212 is about 14545.2126832164. The cubic root of 211563212 is about 595.8634095348.

The spelling of 211563212 in words is "two hundred eleven million, five hundred sixty-three thousand, two hundred twelve".