1321100001103 has 2 divisors, whose sum is σ = 1321100001104. Its totient is φ = 1321100001102.

The previous prime is 1321100001071. The next prime is 1321100001121. The reversal of 1321100001103 is 3011000011231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321100001103 - 2⁵ = 1321100001071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321100005103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660550000551 + 660550000552.

It is an arithmetic number, because the mean of its divisors is an integer number (660550000552).

Almost surely, 2^{1321100001103} is an apocalyptic number.

1321100001103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321100001103 is an equidigital number, since it uses as much as digits as its factorization.

1321100001103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 1321100001103 its reverse (3011000011231), we get a palindrome (4332100012334).

The spelling of 1321100001103 in words is "one trillion, three hundred twenty-one billion, one hundred million, one thousand, one hundred three".