212221203 has 16 divisors (see below), whose sum is σ = 298542720. Its totient is φ = 133724736.

The previous prime is 212221181. The next prime is 212221223. The reversal of 212221203 is 302122212.

It is a happy number.

212221203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212221203 - 2¹⁴ = 212204819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212221223) 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, 21976 + ... + 30122.

It is an arithmetic number, because the mean of its divisors is an integer number (18658920).

Almost surely, 2^212221203 is an apocalyptic number.

212221203 is a deficient number, since it is larger than the sum of its proper divisors (86321517).

212221203 is a wasteful number, since it uses less digits than its factorization.

212221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8626.

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

The square root of 212221203 is about 14567.8139403275. The cubic root of 212221203 is about 596.4805095667.

Adding to 212221203 its reverse (302122212), we get a palindrome (514343415).

The spelling of 212221203 in words is "two hundred twelve million, two hundred twenty-one thousand, two hundred three".