1321020100303 has 2 divisors, whose sum is σ = 1321020100304. Its totient is φ = 1321020100302.

The previous prime is 1321020100219. The next prime is 1321020100349. The reversal of 1321020100303 is 3030010201231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321020100303 - 2²⁹ = 1320483229391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321020100363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660510050151 + 660510050152.

It is an arithmetic number, because the mean of its divisors is an integer number (660510050152).

Almost surely, 2^{1321020100303} is an apocalyptic number.

1321020100303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321020100303 is an equidigital number, since it uses as much as digits as its factorization.

1321020100303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1321020100303 its reverse (3030010201231), we get a palindrome (4351030301534).

The spelling of 1321020100303 in words is "one trillion, three hundred twenty-one billion, twenty million, one hundred thousand, three hundred three".