212442244 has 36 divisors (see below), whose sum is σ = 439825680. Its totient is φ = 89498640.

The previous prime is 212442229. The next prime is 212442247. The reversal of 212442244 is 442244212.

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

It is not an unprimeable number, because it can be changed into a prime (212442247) 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, 2379 + ... + 20749.

It is an arithmetic number, because the mean of its divisors is an integer number (12217380).

Almost surely, 2^212442244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212442244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219912840).

212442244 is an abundant number, since it is smaller than the sum of its proper divisors (227383436).

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

212442244 is a wasteful number, since it uses less digits than its factorization.

212442244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18448 (or 18439 counting only the distinct ones).

The product of its digits is 4096, while the sum is 25.

The square root of 212442244 is about 14575.3985880318. The cubic root of 212442244 is about 596.6875276804.

Adding to 212442244 its reverse (442244212), we get a palindrome (654686456).

The spelling of 212442244 in words is "two hundred twelve million, four hundred forty-two thousand, two hundred forty-four".