21230033230 has 32 divisors (see below), whose sum is σ = 45971804160. Its totient is φ = 6895769760.

The previous prime is 21230033221. The next prime is 21230033257. The reversal of 21230033230 is 3233003212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 21230033198 and 21230033207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7979886 + ... + 7982545.

It is an arithmetic number, because the mean of its divisors is an integer number (1436618880).

Almost surely, 2^21230033230 is an apocalyptic number.

21230033230 is an abundant number, since it is smaller than the sum of its proper divisors (24741770930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230033230 is a wasteful number, since it uses less digits than its factorization.

21230033230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15962464.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21230033230 its reverse (3233003212), we get a palindrome (24463036442).

The spelling of 21230033230 in words is "twenty-one billion, two hundred thirty million, thirty-three thousand, two hundred thirty".