21022300233 has 12 divisors (see below), whose sum is σ = 33126049008. Its totient is φ = 12740787960.

The previous prime is 21022300231. The next prime is 21022300279. The reversal of 21022300233 is 33200322012.

It is a happy number.

21022300233 is a `hidden beast` number, since 210 + 223 + 0 + 0 + 233 = 666.

It is not a de Polignac number, because 21022300233 - 2¹ = 21022300231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022300231) 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, 106173135 + ... + 106173332.

It is an arithmetic number, because the mean of its divisors is an integer number (2760504084).

Almost surely, 2^21022300233 is an apocalyptic number.

It is an amenable number.

21022300233 is a deficient number, since it is larger than the sum of its proper divisors (12103748775).

21022300233 is a wasteful number, since it uses less digits than its factorization.

21022300233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212346484 (or 212346481 counting only the distinct ones).

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

Adding to 21022300233 its reverse (33200322012), we get a palindrome (54222622245).

The spelling of 21022300233 in words is "twenty-one billion, twenty-two million, three hundred thousand, two hundred thirty-three".