21130200223 has 4 divisors (see below), whose sum is σ = 23051127528. Its totient is φ = 19209272920.

The previous prime is 21130200209. The next prime is 21130200229. The reversal of 21130200223 is 32200203112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21130200223 - 2⁹ = 21130199711 is a prime.

It is a super-3 number, since 3×21130200223³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21130200197 and 21130200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130200229) 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, 960463636 + ... + 960463657.

It is an arithmetic number, because the mean of its divisors is an integer number (5762781882).

Almost surely, 2^21130200223 is an apocalyptic number.

21130200223 is a deficient number, since it is larger than the sum of its proper divisors (1920927305).

21130200223 is a wasteful number, since it uses less digits than its factorization.

21130200223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920927304.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21130200223 its reverse (32200203112), we get a palindrome (53330403335).

The spelling of 21130200223 in words is "twenty-one billion, one hundred thirty million, two hundred thousand, two hundred twenty-three".