21021100110133 has 8 divisors (see below), whose sum is σ = 22128766408800. Its totient is φ = 19913563072368.

The previous prime is 21021100110053. The next prime is 21021100110167. The reversal of 21021100110133 is 33101100112012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21021100110133 - 2²⁵ = 21021066555701 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 (21021100111133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31981318 + ... + 32631991.

It is an arithmetic number, because the mean of its divisors is an integer number (2766095801100).

Almost surely, 2^{21021100110133} is an apocalyptic number.

It is an amenable number.

21021100110133 is a deficient number, since it is larger than the sum of its proper divisors (1107666298667).

21021100110133 is a wasteful number, since it uses less digits than its factorization.

21021100110133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64630451.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21021100110133 its reverse (33101100112012), we get a palindrome (54122200222145).

The spelling of 21021100110133 in words is "twenty-one trillion, twenty-one billion, one hundred million, one hundred ten thousand, one hundred thirty-three".