21120300230 has 64 divisors (see below), whose sum is σ = 39554396928. Its totient is φ = 8113781760.

The previous prime is 21120300211. The next prime is 21120300233. The reversal of 21120300230 is 3200302112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120300233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22161434 + ... + 22162386.

It is an arithmetic number, because the mean of its divisors is an integer number (618037452).

Almost surely, 2^21120300230 is an apocalyptic number.

21120300230 is a deficient number, since it is larger than the sum of its proper divisors (18434096698).

21120300230 is a wasteful number, since it uses less digits than its factorization.

21120300230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21120300230 its reverse (3200302112), we get a palindrome (24320602342).

The spelling of 21120300230 in words is "twenty-one billion, one hundred twenty million, three hundred thousand, two hundred thirty".