21110232230 has 16 divisors (see below), whose sum is σ = 38353545360. Its totient is φ = 8365175712.

The previous prime is 21110232217. The next prime is 21110232263. The reversal of 21110232230 is 3223201112.

It is a junction number, because it is equal to n+sod(n) for n = 21110232199 and 21110232208.

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, 9863525 + ... + 9865664.

It is an arithmetic number, because the mean of its divisors is an integer number (2397096585).

Almost surely, 2^21110232230 is an apocalyptic number.

21110232230 is a deficient number, since it is larger than the sum of its proper divisors (17243313130).

21110232230 is a wasteful number, since it uses less digits than its factorization.

21110232230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19729303.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21110232230 its reverse (3223201112), we get a palindrome (24333433342).

The spelling of 21110232230 in words is "twenty-one billion, one hundred ten million, two hundred thirty-two thousand, two hundred thirty".