211200221212 has 12 divisors (see below), whose sum is σ = 369676205640. Its totient is φ = 105578448176.

The previous prime is 211200221203. The next prime is 211200221227. The reversal of 211200221212 is 212122002112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5393662 + ... + 5432677.

It is an arithmetic number, because the mean of its divisors is an integer number (30806350470).

Almost surely, 2^211200221212 is an apocalyptic number.

It is an amenable number.

211200221212 is a deficient number, since it is larger than the sum of its proper divisors (158475984428).

211200221212 is a wasteful number, since it uses less digits than its factorization.

211200221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10831220 (or 10831218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211200221212 its reverse (212122002112), we get a palindrome (423322223324).

The spelling of 211200221212 in words is "two hundred eleven billion, two hundred million, two hundred twenty-one thousand, two hundred twelve".