203211133312 has 64 divisors (see below), whose sum is σ = 444105633600. Its totient is φ = 91852556800.

The previous prime is 203211133303. The next prime is 203211133379. The reversal of 203211133312 is 213331112302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151114 + ... + 655177.

It is an arithmetic number, because the mean of its divisors is an integer number (6939150525).

Almost surely, 2^203211133312 is an apocalyptic number.

203211133312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203211133312 is an abundant number, since it is smaller than the sum of its proper divisors (240894500288).

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

203211133312 is a wasteful number, since it uses less digits than its factorization.

203211133312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806495 (or 806483 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203211133312 its reverse (213331112302), we get a palindrome (416542245614).

The spelling of 203211133312 in words is "two hundred three billion, two hundred eleven million, one hundred thirty-three thousand, three hundred twelve".