211200221011212 has 72 divisors (see below), whose sum is σ = 539011518265584. Its totient is φ = 69722676581376.

The previous prime is 211200221011177. The next prime is 211200221011217. The reversal of 211200221011212 is 212110122002112.

211200221011212 is a `hidden beast` number, since 21 + 1 + 200 + 221 + 0 + 11 + 212 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (211200221011217) 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 23 ways as a sum of consecutive naturals, for example, 15013593 + ... + 25452080.

It is an arithmetic number, because the mean of its divisors is an integer number (7486271087022).

Almost surely, 2^{211200221011212} is an apocalyptic number.

It is an amenable number.

211200221011212 is an abundant number, since it is smaller than the sum of its proper divisors (327811297254372).

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

211200221011212 is a wasteful number, since it uses less digits than its factorization.

211200221011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40467079 (or 40467074 counting only the distinct ones).

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

Adding to 211200221011212 its reverse (212110122002112), we get a palindrome (423310343013324).

The spelling of 211200221011212 in words is "two hundred eleven trillion, two hundred billion, two hundred twenty-one million, eleven thousand, two hundred twelve".