21432422133 has 6 divisors (see below), whose sum is σ = 30957943094. Its totient is φ = 14288281416.

The previous prime is 21432422117. The next prime is 21432422153. The reversal of 21432422133 is 33122423412.

21432422133 is a `hidden beast` number, since 2 + 1 + 432 + 4 + 221 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20345599044 + 1086823089 = 142638^2 + 32967^2 .

It is not a de Polignac number, because 21432422133 - 2⁴ = 21432422117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21432422097 and 21432422106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432422113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1190690110 + ... + 1190690127.

Almost surely, 2^21432422133 is an apocalyptic number.

It is an amenable number.

21432422133 is a deficient number, since it is larger than the sum of its proper divisors (9525520961).

21432422133 is a wasteful number, since it uses less digits than its factorization.

21432422133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381380243 (or 2381380240 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21432422133 its reverse (33122423412), we get a palindrome (54554845545).

The spelling of 21432422133 in words is "twenty-one billion, four hundred thirty-two million, four hundred twenty-two thousand, one hundred thirty-three".