1103323231021 has 32 divisors (see below), whose sum is σ = 1214948367360. Its totient is φ = 993641894400.

The previous prime is 1103323231019. The next prime is 1103323231051. The reversal of 1103323231021 is 1201323233011.

It is a cyclic number.

It is not a de Polignac number, because 1103323231021 - 2¹ = 1103323231019 is a prime.

It is a super-2 number, since 2×1103323231021² (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 = 1103323230983 and 1103323231001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103323231051) 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 31 ways as a sum of consecutive naturals, for example, 766728420 + ... + 766729858.

It is an arithmetic number, because the mean of its divisors is an integer number (37967136480).

Almost surely, 2^{1103323231021} is an apocalyptic number.

1103323231021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1103323231021 is a deficient number, since it is larger than the sum of its proper divisors (111625136339).

1103323231021 is a wasteful number, since it uses less digits than its factorization.

1103323231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2997.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1103323231021 its reverse (1201323233011), we get a palindrome (2304646464032).

The spelling of 1103323231021 in words is "one trillion, one hundred three billion, three hundred twenty-three million, two hundred thirty-one thousand, twenty-one".