21323232229 has 16 divisors (see below), whose sum is σ = 23028667200. Its totient is φ = 19627203456.

The previous prime is 21323232197. The next prime is 21323232233. The reversal of 21323232229 is 92223232312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21323232229 - 2⁵ = 21323232197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21323232229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323232269) 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 15 ways as a sum of consecutive naturals, for example, 10773762 + ... + 10775740.

It is an arithmetic number, because the mean of its divisors is an integer number (1439291700).

Almost surely, 2^21323232229 is an apocalyptic number.

It is an amenable number.

21323232229 is a deficient number, since it is larger than the sum of its proper divisors (1705434971).

21323232229 is a wasteful number, since it uses less digits than its factorization.

21323232229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924.

The product of its digits is 15552, while the sum is 31.

The spelling of 21323232229 in words is "twenty-one billion, three hundred twenty-three million, two hundred thirty-two thousand, two hundred twenty-nine".