2003103201221 has 8 divisors (see below), whose sum is σ = 2011956012024. Its totient is φ = 1994264107200.

The previous prime is 2003103201157. The next prime is 2003103201227. The reversal of 2003103201221 is 1221023013002.

It can be written as a sum of positive squares in 4 ways, for example, as 960429400225 + 1042673800996 = 980015^2 + 1021114^2 .

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 2003103201221 - 2⁶ = 2003103201157 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 2003103201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003103201227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3136430 + ... + 3720671.

It is an arithmetic number, because the mean of its divisors is an integer number (251494501503).

Almost surely, 2^{2003103201221} is an apocalyptic number.

It is an amenable number.

2003103201221 is a deficient number, since it is larger than the sum of its proper divisors (8852810803).

2003103201221 is an equidigital number, since it uses as much as digits as its factorization.

2003103201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858391.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2003103201221 its reverse (1221023013002), we get a palindrome (3224126214223).

The spelling of 2003103201221 in words is "two trillion, three billion, one hundred three million, two hundred one thousand, two hundred twenty-one".