1031332002221 has 2 divisors, whose sum is σ = 1031332002222. Its totient is φ = 1031332002220.

The previous prime is 1031332002161. The next prime is 1031332002269. The reversal of 1031332002221 is 1222002331301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 527636620996 + 503695381225 = 726386^2 + 709715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031332002221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031332002193 and 1031332002202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031332002271) 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, 515666001110 + 515666001111.

It is an arithmetic number, because the mean of its divisors is an integer number (515666001111).

Almost surely, 2^{1031332002221} is an apocalyptic number.

It is an amenable number.

1031332002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031332002221 is an equidigital number, since it uses as much as digits as its factorization.

1031332002221 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 1031332002221 its reverse (1222002331301), we get a palindrome (2253334333522).

The spelling of 1031332002221 in words is "one trillion, thirty-one billion, three hundred thirty-two million, two thousand, two hundred twenty-one".