21232342206 has 24 divisors (see below), whose sum is σ = 46007816400. Its totient is φ = 7076769216.

The previous prime is 21232342193. The next prime is 21232342207. The reversal of 21232342206 is 60224323212.

It is a happy number.

21232342206 is a `hidden beast` number, since 2 + 1 + 232 + 3 + 422 + 0 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21232342206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232342207) 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, 158695 + ... + 260093.

It is an arithmetic number, because the mean of its divisors is an integer number (1916992350).

Almost surely, 2^21232342206 is an apocalyptic number.

21232342206 is an abundant number, since it is smaller than the sum of its proper divisors (24775474194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232342206 is a wasteful number, since it uses less digits than its factorization.

21232342206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113040 (or 113037 counting only the distinct ones).

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

Adding to 21232342206 its reverse (60224323212), we get a palindrome (81456665418).

The spelling of 21232342206 in words is "twenty-one billion, two hundred thirty-two million, three hundred forty-two thousand, two hundred six".