212120022122 has 8 divisors (see below), whose sum is σ = 318182688516. Its totient is φ = 106059125952.

The previous prime is 212120022077. The next prime is 212120022143. The reversal of 212120022122 is 221220021212.

It is a happy number.

212120022122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 211205504041 + 914518081 = 459571^2 + 30241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212120022122.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 85313 + ... + 656900.

Almost surely, 2^212120022122 is an apocalyptic number.

212120022122 is a deficient number, since it is larger than the sum of its proper divisors (106062666394).

212120022122 is a wasteful number, since it uses less digits than its factorization.

212120022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885112.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212120022122 its reverse (221220021212), we get a palindrome (433340043334).

The spelling of 212120022122 in words is "two hundred twelve billion, one hundred twenty million, twenty-two thousand, one hundred twenty-two".