1103441021 has 2 divisors, whose sum is σ = 1103441022. Its totient is φ = 1103441020.

The previous prime is 1103440969. The next prime is 1103441081. The reversal of 1103441021 is 1201443011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1070205796 + 33235225 = 32714^2 + 5765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103441021 - 2²² = 1099246717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103441081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551720510 + 551720511.

It is an arithmetic number, because the mean of its divisors is an integer number (551720511).

Almost surely, 2^1103441021 is an apocalyptic number.

It is an amenable number.

1103441021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103441021 is an equidigital number, since it uses as much as digits as its factorization.

1103441021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1103441021 is about 33218.0827411818. The cubic root of 1103441021 is about 1033.3553882100.

Adding to 1103441021 its reverse (1201443011), we get a palindrome (2304884032).

The spelling of 1103441021 in words is "one billion, one hundred three million, four hundred forty-one thousand, twenty-one".