21113330133100 has 72 divisors (see below), whose sum is σ = 46265997724128. Its totient is φ = 8362388236800.

The previous prime is 21113330133097. The next prime is 21113330133107. The reversal of 21113330133100 is 133103331112.

It is a super-2 number, since 2×21113330133100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113330133107) 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, 94246422 + ... + 94470178.

It is an arithmetic number, because the mean of its divisors is an integer number (642583301724).

Almost surely, 2^{21113330133100} is an apocalyptic number.

21113330133100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21113330133100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23132998862064).

21113330133100 is an abundant number, since it is smaller than the sum of its proper divisors (25152667591028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113330133100 is a wasteful number, since it uses less digits than its factorization.

21113330133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233035 (or 233028 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21113330133100 its reverse (133103331112), we get a palindrome (21246433464212).

The spelling of 21113330133100 in words is "twenty-one trillion, one hundred thirteen billion, three hundred thirty million, one hundred thirty-three thousand, one hundred".