1003103221 has 2 divisors, whose sum is σ = 1003103222. Its totient is φ = 1003103220.

The previous prime is 1003103219. The next prime is 1003103237. The reversal of 1003103221 is 1223013001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912644100 + 90459121 = 30210^2 + 9511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003103221 - 2¹ = 1003103219 is a prime.

Together with 1003103219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003103201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501551610 + 501551611.

It is an arithmetic number, because the mean of its divisors is an integer number (501551611).

Almost surely, 2^1003103221 is an apocalyptic number.

It is an amenable number.

1003103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003103221 is an equidigital number, since it uses as much as digits as its factorization.

1003103221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1003103221 is about 31671.8048270066. The cubic root of 1003103221 is about 1001.0333388430.

Adding to 1003103221 its reverse (1223013001), we get a palindrome (2226116222).

The spelling of 1003103221 in words is "one billion, three million, one hundred three thousand, two hundred twenty-one".