212121112022244 has 36 divisors (see below), whose sum is σ = 539610288170044. Its totient is φ = 70256674043712.

The previous prime is 212121112022243. The next prime is 212121112022279. The reversal of 212121112022244 is 442220211121212.

212121112022244 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 211 + 1 + 202 + 2 + 244 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 159750387777600 + 52370724244644 = 12639240^2 + 7236762^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212121112022243) 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 11 ways as a sum of consecutive naturals, for example, 18765131647 + ... + 18765142950.

Almost surely, 2^{212121112022244} is an apocalyptic number.

It is an amenable number.

212121112022244 is an abundant number, since it is smaller than the sum of its proper divisors (327489176147800).

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

212121112022244 is a wasteful number, since it uses less digits than its factorization.

212121112022244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37530274764 (or 37530274759 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

Adding to 212121112022244 its reverse (442220211121212), we get a palindrome (654341323143456).

The spelling of 212121112022244 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred forty-four".