21033230210 has 32 divisors (see below), whose sum is σ = 39543517440. Its totient is φ = 8039832768.

The previous prime is 21033230173. The next prime is 21033230213. The reversal of 21033230210 is 1203233012.

It is not an unprimeable number, because it can be changed into a prime (21033230213) 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 15 ways as a sum of consecutive naturals, for example, 201476 + ... + 287504.

It is an arithmetic number, because the mean of its divisors is an integer number (1235734920).

Almost surely, 2^21033230210 is an apocalyptic number.

21033230210 is a deficient number, since it is larger than the sum of its proper divisors (18510287230).

21033230210 is a wasteful number, since it uses less digits than its factorization.

21033230210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87122.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21033230210 its reverse (1203233012), we get a palindrome (22236463222).

The spelling of 21033230210 in words is "twenty-one billion, thirty-three million, two hundred thirty thousand, two hundred ten".