21422224233 has 12 divisors (see below), whose sum is σ = 31150887300. Its totient is φ = 14185633056.

The previous prime is 21422224231. The next prime is 21422224249. The reversal of 21422224233 is 33242222412.

21422224233 is a `hidden beast` number, since 2 + 1 + 422 + 2 + 2 + 4 + 233 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4731651369 + 16690572864 = 68787^2 + 129192^2 .

It is not a de Polignac number, because 21422224233 - 2¹ = 21422224231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21422224197 and 21422224206.

It is not an unprimeable number, because it can be changed into a prime (21422224231) 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, 7986066 + ... + 7988747.

It is an arithmetic number, because the mean of its divisors is an integer number (2595907275).

Almost surely, 2^21422224233 is an apocalyptic number.

It is an amenable number.

21422224233 is a deficient number, since it is larger than the sum of its proper divisors (9728663067).

21422224233 is a wasteful number, since it uses less digits than its factorization.

21422224233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15974968 (or 15974965 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

Adding to 21422224233 its reverse (33242222412), we get a palindrome (54664446645).

The spelling of 21422224233 in words is "twenty-one billion, four hundred twenty-two million, two hundred twenty-four thousand, two hundred thirty-three".