203211121103 has 8 divisors (see below), whose sum is σ = 215187624288. Its totient is φ = 191237163264.

The previous prime is 203211121093. The next prime is 203211121111. The reversal of 203211121103 is 301121112302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203211121103 - 2⁶ = 203211121039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203211121123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470726 + ... + 792467.

It is an arithmetic number, because the mean of its divisors is an integer number (26898453036).

Almost surely, 2^203211121103 is an apocalyptic number.

203211121103 is a deficient number, since it is larger than the sum of its proper divisors (11976503185).

203211121103 is a wasteful number, since it uses less digits than its factorization.

203211121103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272673.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 203211121103 its reverse (301121112302), we get a palindrome (504332233405).

The spelling of 203211121103 in words is "two hundred three billion, two hundred eleven million, one hundred twenty-one thousand, one hundred three".