203121220302201 has 16 divisors (see below), whose sum is σ = 270933441483008. Its totient is φ = 135361574409600.

The previous prime is 203121220302197. The next prime is 203121220302271. The reversal of 203121220302201 is 102203022121302.

It is not a de Polignac number, because 203121220302201 - 2² = 203121220302197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203121220302271) 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, 814324635 + ... + 814574031.

It is an arithmetic number, because the mean of its divisors is an integer number (16933340092688).

Almost surely, 2^{203121220302201} is an apocalyptic number.

It is an amenable number.

203121220302201 is a deficient number, since it is larger than the sum of its proper divisors (67812221180807).

203121220302201 is a wasteful number, since it uses less digits than its factorization.

203121220302201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353712.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 203121220302201 its reverse (102203022121302), we get a palindrome (305324242423503).

The spelling of 203121220302201 in words is "two hundred three trillion, one hundred twenty-one billion, two hundred twenty million, three hundred two thousand, two hundred one".