21033320130212 has 12 divisors (see below), whose sum is σ = 39639718707036. Its totient is φ = 9707686213920.

The previous prime is 21033320130209. The next prime is 21033320130217. The reversal of 21033320130212 is 21203102333012.

It can be written as a sum of positive squares in 2 ways, for example, as 4582313921956 + 16451006208256 = 2140634^2 + 4055984^2 .

It is not an unprimeable number, because it can be changed into a prime (21033320130217) 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 3 ways as a sum of consecutive naturals, for example, 202243462739 + ... + 202243462842.

It is an arithmetic number, because the mean of its divisors is an integer number (3303309892253).

Almost surely, 2^{21033320130212} is an apocalyptic number.

It is an amenable number.

21033320130212 is a deficient number, since it is larger than the sum of its proper divisors (18606398576824).

21033320130212 is a wasteful number, since it uses less digits than its factorization.

21033320130212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404486925598 (or 404486925596 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21033320130212 its reverse (21203102333012), we get a palindrome (42236422463224).

The spelling of 21033320130212 in words is "twenty-one trillion, thirty-three billion, three hundred twenty million, one hundred thirty thousand, two hundred twelve".