21323232230 has 32 divisors (see below), whose sum is σ = 39714753600. Its totient is φ = 8233224832.

The previous prime is 21323232197. The next prime is 21323232233. The reversal of 21323232230 is 3223232312.

It is a junction number, because it is equal to n+sod(n) for n = 21323232196 and 21323232205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323232233) 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, 2056439 + ... + 2066781.

It is an arithmetic number, because the mean of its divisors is an integer number (1241086050).

Almost surely, 2^21323232230 is an apocalyptic number.

21323232230 is a deficient number, since it is larger than the sum of its proper divisors (18391521370).

21323232230 is a wasteful number, since it uses less digits than its factorization.

21323232230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17488.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21323232230 its reverse (3223232312), we get a palindrome (24546464542).

The spelling of 21323232230 in words is "twenty-one billion, three hundred twenty-three million, two hundred thirty-two thousand, two hundred thirty".