21113332133 has 8 divisors (see below), whose sum is σ = 22601248800. Its totient is φ = 19663084368.

The previous prime is 21113332129. The next prime is 21113332169. The reversal of 21113332133 is 33123331112.

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 21113332133 - 2² = 21113332129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113332099 and 21113332108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113332033) 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 7 ways as a sum of consecutive naturals, for example, 9416066 + ... + 9418307.

It is an arithmetic number, because the mean of its divisors is an integer number (2825156100).

Almost surely, 2^21113332133 is an apocalyptic number.

It is an amenable number.

21113332133 is a deficient number, since it is larger than the sum of its proper divisors (1487916667).

21113332133 is a wasteful number, since it uses less digits than its factorization.

21113332133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18834451.

The product of its digits is 972, while the sum is 23.

Adding to 21113332133 its reverse (33123331112), we get a palindrome (54236663245).

The spelling of 21113332133 in words is "twenty-one billion, one hundred thirteen million, three hundred thirty-two thousand, one hundred thirty-three".