203111121112 has 32 divisors (see below), whose sum is σ = 388086299280. Its totient is φ = 99622107520.

The previous prime is 203111121091. The next prime is 203111121113. The reversal of 203111121112 is 211121111302.

It is a happy number.

203111121112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203111121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2599203 + ... + 2676205.

Almost surely, 2^203111121112 is an apocalyptic number.

It is an amenable number.

203111121112 is a deficient number, since it is larger than the sum of its proper divisors (184975178168).

203111121112 is a wasteful number, since it uses less digits than its factorization.

203111121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83283 (or 83279 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 203111121112 its reverse (211121111302), we get a palindrome (414232232414).

The spelling of 203111121112 in words is "two hundred three billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twelve".