1103323112021 has 8 divisors (see below), whose sum is σ = 1188207438264. Its totient is φ = 1018440688320.

The previous prime is 1103323111951. The next prime is 1103323112083. The reversal of 1103323112021 is 1202113233011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29946302500 + 1073376809521 = 173050^2 + 1036039^2 .

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 1103323112021 - 2¹⁰ = 1103323110997 is a prime.

It is a super-2 number, since 2×1103323112021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103323111984 and 1103323112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103323118021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869795 + ... + 1721391.

It is an arithmetic number, because the mean of its divisors is an integer number (148525929783).

Almost surely, 2^{1103323112021} is an apocalyptic number.

It is an amenable number.

1103323112021 is a deficient number, since it is larger than the sum of its proper divisors (84884326243).

1103323112021 is an equidigital number, since it uses as much as digits as its factorization.

1103323112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951271.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1103323112021 its reverse (1202113233011), we get a palindrome (2305436345032).

The spelling of 1103323112021 in words is "one trillion, one hundred three billion, three hundred twenty-three million, one hundred twelve thousand, twenty-one".