1103323213021 has 4 divisors (see below), whose sum is σ = 1103329538272. Its totient is φ = 1103316887772.

The previous prime is 1103323212949. The next prime is 1103323213043. The reversal of 1103323213021 is 1203123233011.

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 a de Polignac number, because none of the positive numbers 2^k-1103323213021 is a prime.

It is a super-2 number, since 2×1103323213021² (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 = 1103323212983 and 1103323213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103323213061) 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 3 ways as a sum of consecutive naturals, for example, 2893335 + ... + 3252388.

It is an arithmetic number, because the mean of its divisors is an integer number (275832384568).

Almost surely, 2^{1103323213021} is an apocalyptic number.

It is an amenable number.

1103323213021 is a deficient number, since it is larger than the sum of its proper divisors (6325251).

1103323213021 is an equidigital number, since it uses as much as digits as its factorization.

1103323213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325250.

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

Adding to 1103323213021 its reverse (1203123233011), we get a palindrome (2306446446032).

The spelling of 1103323213021 in words is "one trillion, one hundred three billion, three hundred twenty-three million, two hundred thirteen thousand, twenty-one".