21230200233 has 12 divisors (see below), whose sum is σ = 33453649008. Its totient is φ = 12866787960.

The previous prime is 21230200193. The next prime is 21230200249. The reversal of 21230200233 is 33200203212.

It is a happy number.

21230200233 is a `hidden beast` number, since 2 + 1 + 230 + 200 + 233 = 666.

It is not a de Polignac number, because 21230200233 - 2²¹ = 21228103081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230200633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107223135 + ... + 107223332.

It is an arithmetic number, because the mean of its divisors is an integer number (2787804084).

Almost surely, 2^21230200233 is an apocalyptic number.

It is an amenable number.

21230200233 is a deficient number, since it is larger than the sum of its proper divisors (12223448775).

21230200233 is a wasteful number, since it uses less digits than its factorization.

21230200233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214446484 (or 214446481 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21230200233 its reverse (33200203212), we get a palindrome (54430403445).

The spelling of 21230200233 in words is "twenty-one billion, two hundred thirty million, two hundred thousand, two hundred thirty-three".