1113330431021 has 4 divisors (see below), whose sum is σ = 1113339421344. Its totient is φ = 1113321440700.

The previous prime is 1113330431011. The next prime is 1113330431023. The reversal of 1113330431021 is 1201340333111.

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 1113330431021 - 2⁶ = 1113330430957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113330431023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4306775 + ... + 4557956.

It is an arithmetic number, because the mean of its divisors is an integer number (278334855336).

Almost surely, 2^{1113330431021} is an apocalyptic number.

It is an amenable number.

1113330431021 is a deficient number, since it is larger than the sum of its proper divisors (8990323).

1113330431021 is an equidigital number, since it uses as much as digits as its factorization.

1113330431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8990322.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1113330431021 its reverse (1201340333111), we get a palindrome (2314670764132).

The spelling of 1113330431021 in words is "one trillion, one hundred thirteen billion, three hundred thirty million, four hundred thirty-one thousand, twenty-one".