203103010221 has 16 divisors (see below), whose sum is σ = 279103123200. Its totient is φ = 131305313088.

The previous prime is 203103010211. The next prime is 203103010247. The reversal of 203103010221 is 122010301302.

It is not a de Polignac number, because 203103010221 - 2¹⁸ = 203102748077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203103010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203103010211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6592186 + ... + 6622923.

It is an arithmetic number, because the mean of its divisors is an integer number (17443945200).

Almost surely, 2^203103010221 is an apocalyptic number.

It is an amenable number.

203103010221 is a deficient number, since it is larger than the sum of its proper divisors (76000112979).

203103010221 is a wasteful number, since it uses less digits than its factorization.

203103010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13215268.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 203103010221 its reverse (122010301302), we get a palindrome (325113311523).

The spelling of 203103010221 in words is "two hundred three billion, one hundred three million, ten thousand, two hundred twenty-one".