212111502224 has 20 divisors (see below), whose sum is σ = 410977319280. Its totient is φ = 106052839200.

The previous prime is 212111502223. The next prime is 212111502271. The reversal of 212111502224 is 422205111212.

It is a self number, because there is not a number n which added to its sum of digits gives 212111502224.

It is not an unprimeable number, because it can be changed into a prime (212111502223) 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 3 ways as a sum of consecutive naturals, for example, 495347 + ... + 818285.

It is an arithmetic number, because the mean of its divisors is an integer number (20548865964).

Almost surely, 2^212111502224 is an apocalyptic number.

It is an amenable number.

212111502224 is a deficient number, since it is larger than the sum of its proper divisors (198865817056).

212111502224 is a wasteful number, since it uses less digits than its factorization.

212111502224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363998 (or 363992 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 212111502224 its reverse (422205111212), we get a palindrome (634316613436).

The spelling of 212111502224 in words is "two hundred twelve billion, one hundred eleven million, five hundred two thousand, two hundred twenty-four".