212412044421 has 6 divisors (see below), whose sum is σ = 306817397510. Its totient is φ = 141608029608.

The previous prime is 212412044347. The next prime is 212412044501. The reversal of 212412044421 is 124440214212.

212412044421 is a `hidden beast` number, since 2 + 12 + 4 + 1 + 204 + 442 + 1 = 666.

212412044421 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 only one way, i.e., 124626650625 + 87785393796 = 353025^2 + 296286^2 .

It is not a de Polignac number, because 212412044421 - 2¹⁵ = 212412011653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212412044921) 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 5 ways as a sum of consecutive naturals, for example, 11800669126 + ... + 11800669143.

Almost surely, 2^212412044421 is an apocalyptic number.

It is an amenable number.

212412044421 is a deficient number, since it is larger than the sum of its proper divisors (94405353089).

212412044421 is a wasteful number, since it uses less digits than its factorization.

212412044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23601338275 (or 23601338272 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 212412044421 its reverse (124440214212), we get a palindrome (336852258633).

The spelling of 212412044421 in words is "two hundred twelve billion, four hundred twelve million, forty-four thousand, four hundred twenty-one".