212211112244 has 12 divisors (see below), whose sum is σ = 373516091844. Its totient is φ = 105492228864.

The previous prime is 212211112163. The next prime is 212211112259. The reversal of 212211112244 is 442211112212.

It can be written as a sum of positive squares in 2 ways, for example, as 176054089744 + 36157022500 = 419588^2 + 190150^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153331037 + ... + 153332420.

It is an arithmetic number, because the mean of its divisors is an integer number (31126340987).

Almost surely, 2^212211112244 is an apocalyptic number.

It is an amenable number.

212211112244 is a deficient number, since it is larger than the sum of its proper divisors (161304979600).

212211112244 is a wasteful number, since it uses less digits than its factorization.

212211112244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306663634 (or 306663632 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

Adding to 212211112244 its reverse (442211112212), we get a palindrome (654422224456).

The spelling of 212211112244 in words is "two hundred twelve billion, two hundred eleven million, one hundred twelve thousand, two hundred forty-four".