21100000100233 has 4 divisors (see below), whose sum is σ = 21297196362960. Its totient is φ = 20902803837508.

The previous prime is 21100000100189. The next prime is 21100000100269. The reversal of 21100000100233 is 33200100000112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21100000100233 - 2²⁹ = 21099463229321 is a prime.

It is a super-2 number, since 2×21100000100233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100000103233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98598131203 + ... + 98598131416.

It is an arithmetic number, because the mean of its divisors is an integer number (5324299090740).

Almost surely, 2^{21100000100233} is an apocalyptic number.

It is an amenable number.

21100000100233 is a deficient number, since it is larger than the sum of its proper divisors (197196262727).

21100000100233 is a wasteful number, since it uses less digits than its factorization.

21100000100233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197196262726.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21100000100233 its reverse (33200100000112), we get a palindrome (54300100100345).

The spelling of 21100000100233 in words is "twenty-one trillion, one hundred billion, one hundred thousand, two hundred thirty-three".