1031003221201 has 2 divisors, whose sum is σ = 1031003221202. Its totient is φ = 1031003221200.

The previous prime is 1031003221187. The next prime is 1031003221217. The reversal of 1031003221201 is 1021223001301.

It is an a-pointer prime, because the next prime (1031003221217) can be obtained adding 1031003221201 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1014449825601 + 16553395600 = 1007199^2 + 128660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031003221201 - 2⁵ = 1031003221169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031003221291) 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, 515501610600 + 515501610601.

It is an arithmetic number, because the mean of its divisors is an integer number (515501610601).

Almost surely, 2^{1031003221201} is an apocalyptic number.

It is an amenable number.

1031003221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031003221201 is an equidigital number, since it uses as much as digits as its factorization.

1031003221201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1031003221201 its reverse (1021223001301), we get a palindrome (2052226222502).

The spelling of 1031003221201 in words is "one trillion, thirty-one billion, three million, two hundred twenty-one thousand, two hundred one".