1020201331603 has 2 divisors, whose sum is σ = 1020201331604. Its totient is φ = 1020201331602.

The previous prime is 1020201331579. The next prime is 1020201331657. The reversal of 1020201331603 is 3061331020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020201331603 - 2⁵ = 1020201331571 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020201331703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100665801 + 510100665802.

It is an arithmetic number, because the mean of its divisors is an integer number (510100665802).

Almost surely, 2^{1020201331603} is an apocalyptic number.

1020201331603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020201331603 is an equidigital number, since it uses as much as digits as its factorization.

1020201331603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1020201331603 its reverse (3061331020201), we get a palindrome (4081532351804).

The spelling of 1020201331603 in words is "one trillion, twenty billion, two hundred one million, three hundred thirty-one thousand, six hundred three".