212230236 has 48 divisors (see below), whose sum is σ = 515844000. Its totient is φ = 67828992.

The previous prime is 212230211. The next prime is 212230237. The reversal of 212230236 is 632032212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212230237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49806 + ... + 53898.

It is an arithmetic number, because the mean of its divisors is an integer number (10746750).

Almost surely, 2^212230236 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 212230236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257922000).

212230236 is an abundant number, since it is smaller than the sum of its proper divisors (303613764).

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

212230236 is a wasteful number, since it uses less digits than its factorization.

212230236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 212230236 is about 14568.1239698185. The cubic root of 212230236 is about 596.4889723278.

Adding to 212230236 its reverse (632032212), we get a palindrome (844262448).

The spelling of 212230236 in words is "two hundred twelve million, two hundred thirty thousand, two hundred thirty-six".