1103320221221 has 4 divisors (see below), whose sum is σ = 1103327146944. Its totient is φ = 1103313295500.

The previous prime is 1103320221217. The next prime is 1103320221233. The reversal of 1103320221221 is 1221220233011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1103320221221 - 2² = 1103320221217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103320221193 and 1103320221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103320224221) 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 3 ways as a sum of consecutive naturals, for example, 3218135 + ... + 3544436.

It is an arithmetic number, because the mean of its divisors is an integer number (275831786736).

Almost surely, 2^{1103320221221} is an apocalyptic number.

It is an amenable number.

1103320221221 is a deficient number, since it is larger than the sum of its proper divisors (6925723).

1103320221221 is an equidigital number, since it uses as much as digits as its factorization.

1103320221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925722.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1103320221221 its reverse (1221220233011), we get a palindrome (2324540454232).

The spelling of 1103320221221 in words is "one trillion, one hundred three billion, three hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".