212221010212 has 48 divisors (see below), whose sum is σ = 418072378752. Its totient is φ = 93724167680.

The previous prime is 212221010173. The next prime is 212221010219. The reversal of 212221010212 is 212010122212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212221010219) 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, 1197214 + ... + 1362997.

It is an arithmetic number, because the mean of its divisors is an integer number (8709841224).

Almost surely, 2^212221010212 is an apocalyptic number.

It is an amenable number.

212221010212 is a deficient number, since it is larger than the sum of its proper divisors (205851368540).

212221010212 is a wasteful number, since it uses less digits than its factorization.

212221010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560308 (or 2560306 counting only the distinct ones).

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

Adding to 212221010212 its reverse (212010122212), we get a palindrome (424231132424).

The spelling of 212221010212 in words is "two hundred twelve billion, two hundred twenty-one million, ten thousand, two hundred twelve".