203211221203212 has 72 divisors (see below), whose sum is σ = 500433363760176. Its totient is φ = 64171371851136.

The previous prime is 203211221203189. The next prime is 203211221203213. The reversal of 203211221203212 is 212302122112302.

203211221203212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×203211221203212³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (203211221203213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 916423378 + ... + 916645094.

It is an arithmetic number, because the mean of its divisors is an integer number (6950463385558).

Almost surely, 2^{203211221203212} is an apocalyptic number.

It is an amenable number.

203211221203212 is an abundant number, since it is smaller than the sum of its proper divisors (297222142556964).

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

203211221203212 is a wasteful number, since it uses less digits than its factorization.

203211221203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433335 (or 433314 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 203211221203212 its reverse (212302122112302), we get a palindrome (415513343315514).

The spelling of 203211221203212 in words is "two hundred three trillion, two hundred eleven billion, two hundred twenty-one million, two hundred three thousand, two hundred twelve".