203212212 has 36 divisors (see below), whose sum is σ = 551577600. Its totient is φ = 58060464.

The previous prime is 203212211. The next prime is 203212241. The reversal of 203212212 is 212212302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 203212191 and 203212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172212 + ... + 173387.

It is an arithmetic number, because the mean of its divisors is an integer number (15321600).

Almost surely, 2^203212212 is an apocalyptic number.

It is an amenable number.

203212212 is an abundant number, since it is smaller than the sum of its proper divisors (348365388).

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

203212212 is a wasteful number, since it uses less digits than its factorization.

203212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345620 (or 345611 counting only the distinct ones).

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

The square root of 203212212 is about 14255.2520847581. The cubic root of 203212212 is about 587.9177889597.

Adding to 203212212 its reverse (212212302), we get a palindrome (415424514).

The spelling of 203212212 in words is "two hundred three million, two hundred twelve thousand, two hundred twelve".