21232112230 has 16 divisors (see below), whose sum is σ = 43677488160. Its totient is φ = 7279581312.

The previous prime is 21232112207. The next prime is 21232112303. The reversal of 21232112230 is 3221123212.

It is a junction number, because it is equal to n+sod(n) for n = 21232112198 and 21232112207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151657875 + ... + 151658014.

It is an arithmetic number, because the mean of its divisors is an integer number (2729843010).

Almost surely, 2^21232112230 is an apocalyptic number.

21232112230 is an abundant number, since it is smaller than the sum of its proper divisors (22445375930).

21232112230 is a wasteful number, since it uses less digits than its factorization.

21232112230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303315903.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21232112230 its reverse (3221123212), we get a palindrome (24453235442).

The spelling of 21232112230 in words is "twenty-one billion, two hundred thirty-two million, one hundred twelve thousand, two hundred thirty".