212230136 has 16 divisors (see below), whose sum is σ = 398101200. Its totient is φ = 106069824.

The previous prime is 212230111. The next prime is 212230181. The reversal of 212230136 is 631032212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22556 + ... + 30548.

It is an arithmetic number, because the mean of its divisors is an integer number (24881325).

Almost surely, 2^212230136 is an apocalyptic number.

It is an amenable number.

212230136 is a deficient number, since it is larger than the sum of its proper divisors (185871064).

212230136 is a wasteful number, since it uses less digits than its factorization.

212230136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11318 (or 11314 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 212230136 is about 14568.1205376672. The cubic root of 212230136 is about 596.4888786419.

Adding to 212230136 its reverse (631032212), we get a palindrome (843262348).

The spelling of 212230136 in words is "two hundred twelve million, two hundred thirty thousand, one hundred thirty-six".