1103221021 has 8 divisors (see below), whose sum is σ = 1261102464. Its totient is φ = 945409200.

The previous prime is 1103221019. The next prime is 1103221033. The reversal of 1103221021 is 1201223011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1103221021 - 2¹ = 1103221019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103220992 and 1103221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103221621) 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 7 ways as a sum of consecutive naturals, for example, 22731 + ... + 52183.

It is an arithmetic number, because the mean of its divisors is an integer number (157637808).

Almost surely, 2^1103221021 is an apocalyptic number.

It is an amenable number.

1103221021 is a deficient number, since it is larger than the sum of its proper divisors (157881443).

1103221021 is an equidigital number, since it uses as much as digits as its factorization.

1103221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34811.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1103221021 is about 33214.7711267141. The cubic root of 1103221021 is about 1033.2867081171.

Adding to 1103221021 its reverse (1201223011), we get a palindrome (2304444032).

The spelling of 1103221021 in words is "one billion, one hundred three million, two hundred twenty-one thousand, twenty-one".