21102130223 has 8 divisors (see below), whose sum is σ = 21630572880. Its totient is φ = 20574342720.

The previous prime is 21102130219. The next prime is 21102130237. The reversal of 21102130223 is 32203120112.

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 21102130223 - 2² = 21102130219 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 (21102130523) 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, 98240 + ... + 227717.

It is an arithmetic number, because the mean of its divisors is an integer number (2703821610).

Almost surely, 2^21102130223 is an apocalyptic number.

21102130223 is a deficient number, since it is larger than the sum of its proper divisors (528442657).

21102130223 is a wasteful number, since it uses less digits than its factorization.

21102130223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327577.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21102130223 its reverse (32203120112), we get a palindrome (53305250335).

The spelling of 21102130223 in words is "twenty-one billion, one hundred two million, one hundred thirty thousand, two hundred twenty-three".