1003445505221 has 2 divisors, whose sum is σ = 1003445505222. Its totient is φ = 1003445505220.

The previous prime is 1003445505203. The next prime is 1003445505229. The reversal of 1003445505221 is 1225055443001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002902102500 + 543402721 = 1001450^2 + 23311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003445505221 - 2⁶ = 1003445505157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003445505229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501722752610 + 501722752611.

It is an arithmetic number, because the mean of its divisors is an integer number (501722752611).

Almost surely, 2^{1003445505221} is an apocalyptic number.

It is an amenable number.

1003445505221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003445505221 is an equidigital number, since it uses as much as digits as its factorization.

1003445505221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 1003445505221 in words is "one trillion, three billion, four hundred forty-five million, five hundred five thousand, two hundred twenty-one".