21331112230 has 32 divisors (see below), whose sum is σ = 39435475968. Its totient is φ = 8302540800.

The previous prime is 21331112191. The next prime is 21331112233. The reversal of 21331112230 is 3221113312.

It is a junction number, because it is equal to n+sod(n) for n = 21331112198 and 21331112207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331112233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89110 + ... + 224950.

It is an arithmetic number, because the mean of its divisors is an integer number (1232358624).

Almost surely, 2^21331112230 is an apocalyptic number.

21331112230 is a deficient number, since it is larger than the sum of its proper divisors (18104363738).

21331112230 is a wasteful number, since it uses less digits than its factorization.

21331112230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136272.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21331112230 its reverse (3221113312), we get a palindrome (24552225542).

The spelling of 21331112230 in words is "twenty-one billion, three hundred thirty-one million, one hundred twelve thousand, two hundred thirty".