1103303021 has 2 divisors, whose sum is σ = 1103303022. Its totient is φ = 1103303020.

The previous prime is 1103303011. The next prime is 1103303027. The reversal of 1103303021 is 1203033011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103169796 + 133225 = 33214^2 + 365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103303021 is a prime.

It is a super-2 number, since 2×1103303021² = 2434555112295452882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1103302987 and 1103303005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103303027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551651510 + 551651511.

It is an arithmetic number, because the mean of its divisors is an integer number (551651511).

Almost surely, 2^1103303021 is an apocalyptic number.

It is an amenable number.

1103303021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103303021 is an equidigital number, since it uses as much as digits as its factorization.

1103303021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1103303021 is about 33216.0054943396. The cubic root of 1103303021 is about 1033.3123081281.

Adding to 1103303021 its reverse (1203033011), we get a palindrome (2306336032).

The spelling of 1103303021 in words is "one billion, one hundred three million, three hundred three thousand, twenty-one".