1003213203221 has 2 divisors, whose sum is σ = 1003213203222. Its totient is φ = 1003213203220.

The previous prime is 1003213203149. The next prime is 1003213203287. The reversal of 1003213203221 is 1223023123001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 934626831121 + 68586372100 = 966761^2 + 261890^2 .

It is an emirp because it is prime and its reverse (1223023123001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1003213203221 - 2³⁰ = 1002139461397 is a prime.

It is a super-2 number, since 2×1003213203221² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1003213203193 and 1003213203202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003213209221) 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 as a sum of consecutive naturals, namely, 501606601610 + 501606601611.

It is an arithmetic number, because the mean of its divisors is an integer number (501606601611).

Almost surely, 2^{1003213203221} is an apocalyptic number.

It is an amenable number.

1003213203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003213203221 is an equidigital number, since it uses as much as digits as its factorization.

1003213203221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1003213203221 its reverse (1223023123001), we get a palindrome (2226236326222).

The spelling of 1003213203221 in words is "one trillion, three billion, two hundred thirteen million, two hundred three thousand, two hundred twenty-one".