203211321110103 has 4 divisors (see below), whose sum is σ = 270948428146808. Its totient is φ = 135474214073400.

The previous prime is 203211321110069. The next prime is 203211321110129. The reversal of 203211321110103 is 301011123112302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203211321110103 - 2⁸ = 203211321109847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203211321110103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203211321110153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33868553518348 + ... + 33868553518353.

It is an arithmetic number, because the mean of its divisors is an integer number (67737107036702).

Almost surely, 2^{203211321110103} is an apocalyptic number.

203211321110103 is a deficient number, since it is larger than the sum of its proper divisors (67737107036705).

203211321110103 is an equidigital number, since it uses as much as digits as its factorization.

203211321110103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67737107036704.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 203211321110103 its reverse (301011123112302), we get a palindrome (504222444222405).

The spelling of 203211321110103 in words is "two hundred three trillion, two hundred eleven billion, three hundred twenty-one million, one hundred ten thousand, one hundred three".