1003312032221 has 4 divisors (see below), whose sum is σ = 1003380950844. Its totient is φ = 1003243113600.

The previous prime is 1003312032209. The next prime is 1003312032223. The reversal of 1003312032221 is 1222302133001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 561068412025 + 442243620196 = 749045^2 + 665014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003312032221 - 2¹⁸ = 1003311770077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003312032193 and 1003312032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003312032223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34437470 + ... + 34466591.

It is an arithmetic number, because the mean of its divisors is an integer number (250845237711).

Almost surely, 2^{1003312032221} is an apocalyptic number.

It is an amenable number.

1003312032221 is a deficient number, since it is larger than the sum of its proper divisors (68918623).

1003312032221 is an equidigital number, since it uses as much as digits as its factorization.

1003312032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68918622.

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

Adding to 1003312032221 its reverse (1222302133001), we get a palindrome (2225614165222).

The spelling of 1003312032221 in words is "one trillion, three billion, three hundred twelve million, thirty-two thousand, two hundred twenty-one".