1100100331321 has 4 divisors (see below), whose sum is σ = 1118134763044. Its totient is φ = 1082065899600.

The previous prime is 1100100331241. The next prime is 1100100331327. The reversal of 1100100331321 is 1231330010011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 214544049721 + 885556281600 = 463189^2 + 941040^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100100331321 - 2¹⁵ = 1100100298553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100100331295 and 1100100331304.

It is not an unprimeable number, because it can be changed into a prime (1100100331327) 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, 9017215770 + ... + 9017215891.

It is an arithmetic number, because the mean of its divisors is an integer number (279533690761).

Almost surely, 2^{1100100331321} is an apocalyptic number.

It is an amenable number.

1100100331321 is a deficient number, since it is larger than the sum of its proper divisors (18034431723).

1100100331321 is an equidigital number, since it uses as much as digits as its factorization.

1100100331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18034431722.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1100100331321 its reverse (1231330010011), we get a palindrome (2331430341332).

The spelling of 1100100331321 in words is "one trillion, one hundred billion, one hundred million, three hundred thirty-one thousand, three hundred twenty-one".