203212112103 has 144 divisors (see below), whose sum is σ = 398034943488. Its totient is φ = 97213564800.

The previous prime is 203212111997. The next prime is 203212112141. The reversal of 203212112103 is 301211212302.

It is not a de Polignac number, because 203212112103 - 2⁸ = 203212111847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203212112153) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 46277038 + ... + 46281428.

It is an arithmetic number, because the mean of its divisors is an integer number (2764131552).

Almost surely, 2^203212112103 is an apocalyptic number.

203212112103 is a deficient number, since it is larger than the sum of its proper divisors (194822831385).

203212112103 is a wasteful number, since it uses less digits than its factorization.

203212112103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4906 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 203212112103 its reverse (301211212302), we get a palindrome (504423324405).

It can be divided in two parts, 20 and 3212112103, that added together give a palindrome (3212112123).

The spelling of 203212112103 in words is "two hundred three billion, two hundred twelve million, one hundred twelve thousand, one hundred three".