21100802833 has 8 divisors (see below), whose sum is σ = 23020145280. Its totient is φ = 19181641680.

The previous prime is 21100802791. The next prime is 21100802857. The reversal of 21100802833 is 33820800112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21100802833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100803833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341991 + ... + 398947.

It is an arithmetic number, because the mean of its divisors is an integer number (2877518160).

Almost surely, 2^21100802833 is an apocalyptic number.

It is an amenable number.

21100802833 is a deficient number, since it is larger than the sum of its proper divisors (1919342447).

21100802833 is a wasteful number, since it uses less digits than its factorization.

21100802833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90647.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 21100802833 in words is "twenty-one billion, one hundred million, eight hundred two thousand, eight hundred thirty-three".