221203123103 has 8 divisors (see below), whose sum is σ = 232852844400. Its totient is φ = 209554147008.

The previous prime is 221203123081. The next prime is 221203123109. The reversal of 221203123103 is 301321302122.

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

It is not a de Polignac number, because 221203123103 - 2¹⁶ = 221203057567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221203123109) 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, 485075 + ... + 823227.

It is an arithmetic number, because the mean of its divisors is an integer number (29106605550).

Almost surely, 2^221203123103 is an apocalyptic number.

221203123103 is a deficient number, since it is larger than the sum of its proper divisors (11649721297).

221203123103 is a wasteful number, since it uses less digits than its factorization.

221203123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372601.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221203123103 its reverse (301321302122), we get a palindrome (522524425225).

The spelling of 221203123103 in words is "two hundred twenty-one billion, two hundred three million, one hundred twenty-three thousand, one hundred three".