21113330303331 has 24 divisors (see below), whose sum is σ = 35703843118944. Its totient is φ = 11770497728640.

The previous prime is 21113330303297. The next prime is 21113330303371. The reversal of 21113330303331 is 13330303331112.

21113330303331 is a `hidden beast` number, since 2 + 11 + 13 + 3 + 3 + 0 + 303 + 331 = 666.

It is not a de Polignac number, because 21113330303331 - 2⁷ = 21113330303203 is a prime.

It is a super-2 number, since 2×21113330303331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21113330303295 and 21113330303304.

It is not an unprimeable number, because it can be changed into a prime (21113330303371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4086975796 + ... + 4086980961.

It is an arithmetic number, because the mean of its divisors is an integer number (1487660129956).

Almost surely, 2^{21113330303331} is an apocalyptic number.

21113330303331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21113330303331 is a deficient number, since it is larger than the sum of its proper divisors (14590512815613).

21113330303331 is a wasteful number, since it uses less digits than its factorization.

21113330303331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173956811 (or 8173956808 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 27.

Adding to 21113330303331 its reverse (13330303331112), we get a palindrome (34443633634443).

The spelling of 21113330303331 in words is "twenty-one trillion, one hundred thirteen billion, three hundred thirty million, three hundred three thousand, three hundred thirty-one".