212232210 has 16 divisors (see below), whose sum is σ = 509357376. Its totient is φ = 56595248.

The previous prime is 212232149. The next prime is 212232211. The reversal of 212232210 is 12232212.

It is a happy number.

It is a super-2 number, since 2×212232210² = 90085021922968200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212232210.

It is not an unprimeable number, because it can be changed into a prime (212232211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3537174 + ... + 3537233.

It is an arithmetic number, because the mean of its divisors is an integer number (31834836).

Almost surely, 2^212232210 is an apocalyptic number.

212232210 is an abundant number, since it is smaller than the sum of its proper divisors (297125166).

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

212232210 is a wasteful number, since it uses less digits than its factorization.

212232210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7074417.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 212232210 is about 14568.1917203200. The cubic root of 212232210 is about 596.4908216803.

Adding to 212232210 its reverse (12232212), we get a palindrome (224464422).

The spelling of 212232210 in words is "two hundred twelve million, two hundred thirty-two thousand, two hundred ten".