203212112 has 20 divisors (see below), whose sum is σ = 395123520. Its totient is φ = 101244768.

The previous prime is 203212111. The next prime is 203212117. The reversal of 203212112 is 211212302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212111) 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 3 ways as a sum of consecutive naturals, for example, 17912 + ... + 26967.

It is an arithmetic number, because the mean of its divisors is an integer number (19756176).

Almost surely, 2^203212112 is an apocalyptic number.

It is an amenable number.

203212112 is a deficient number, since it is larger than the sum of its proper divisors (191911408).

203212112 is a wasteful number, since it uses less digits than its factorization.

203212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45170 (or 45164 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 203212112 is about 14255.2485772785. The cubic root of 203212112 is about 587.9176925223.

Adding to 203212112 its reverse (211212302), we get a palindrome (414424414).

The spelling of 203212112 in words is "two hundred three million, two hundred twelve thousand, one hundred twelve".