1003221351001 has 2 divisors, whose sum is σ = 1003221351002. Its totient is φ = 1003221351000.

The previous prime is 1003221350909. The next prime is 1003221351017. The reversal of 1003221351001 is 1001531223001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931464335376 + 71757015625 = 965124^2 + 267875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003221351001 - 2²⁷ = 1003087133273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1003221351001.

It is not a weakly prime, because it can be changed into another prime (1003221351401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501610675500 + 501610675501.

It is an arithmetic number, because the mean of its divisors is an integer number (501610675501).

Almost surely, 2^{1003221351001} is an apocalyptic number.

It is an amenable number.

1003221351001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003221351001 is an equidigital number, since it uses as much as digits as its factorization.

1003221351001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 1003221351001 its reverse (1001531223001), we get a palindrome (2004752574002).

The spelling of 1003221351001 in words is "one trillion, three billion, two hundred twenty-one million, three hundred fifty-one thousand, one".