1103443221 has 16 divisors (see below), whose sum is σ = 1558960640. Its totient is φ = 692290800.

The previous prime is 1103443207. The next prime is 1103443241. The reversal of 1103443221 is 1223443011.

It is not a de Polignac number, because 1103443221 - 2⁹ = 1103442709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103443241) 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 in 15 ways as a sum of consecutive naturals, for example, 55495 + ... + 72708.

It is an arithmetic number, because the mean of its divisors is an integer number (97435040).

Almost surely, 2^1103443221 is an apocalyptic number.

It is an amenable number.

1103443221 is a deficient number, since it is larger than the sum of its proper divisors (455517419).

1103443221 is a wasteful number, since it uses less digits than its factorization.

1103443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128376.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1103443221 is about 33218.1158556592. The cubic root of 1103443221 is about 1033.3560749649.

Adding to 1103443221 its reverse (1223443011), we get a palindrome (2326886232).

The spelling of 1103443221 in words is "one billion, one hundred three million, four hundred forty-three thousand, two hundred twenty-one".