212244005556 has 36 divisors (see below), whose sum is σ = 585278925504. Its totient is φ = 64316365200.

The previous prime is 212244005521. The next prime is 212244005557. The reversal of 212244005556 is 655500442212.

212244005556 is a `hidden beast` number, since 21 + 224 + 400 + 5 + 5 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 212244005556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212244005557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267984460 + ... + 267985251.

Almost surely, 2^212244005556 is an apocalyptic number.

It is an amenable number.

212244005556 is an abundant number, since it is smaller than the sum of its proper divisors (373034919948).

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

212244005556 is a wasteful number, since it uses less digits than its factorization.

212244005556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535969732 (or 535969727 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 212244005556 its reverse (655500442212), we get a palindrome (867744447768).

The spelling of 212244005556 in words is "two hundred twelve billion, two hundred forty-four million, five thousand, five hundred fifty-six".