212021031224 has 64 divisors (see below), whose sum is σ = 426132161280. Its totient is φ = 98717184000.

The previous prime is 212021031223. The next prime is 212021031241. The reversal of 212021031224 is 422130120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021031196 and 212021031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021031223) 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 15 ways as a sum of consecutive naturals, for example, 599444 + ... + 885084.

It is an arithmetic number, because the mean of its divisors is an integer number (6658315020).

Almost surely, 2^212021031224 is an apocalyptic number.

It is an amenable number.

212021031224 is an abundant number, since it is smaller than the sum of its proper divisors (214111130056).

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

212021031224 is a wasteful number, since it uses less digits than its factorization.

212021031224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285792 (or 285788 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212021031224 its reverse (422130120212), we get a palindrome (634151151436).

The spelling of 212021031224 in words is "two hundred twelve billion, twenty-one million, thirty-one thousand, two hundred twenty-four".