20321030012 has 96 divisors (see below), whose sum is σ = 38426572800. Its totient is φ = 9382044672.

The previous prime is 20321030011. The next prime is 20321030047. The reversal of 20321030012 is 21003012302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321030011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89519843 + ... + 89520069.

It is an arithmetic number, because the mean of its divisors is an integer number (400276800).

Almost surely, 2^20321030012 is an apocalyptic number.

It is an amenable number.

20321030012 is a deficient number, since it is larger than the sum of its proper divisors (18105542788).

20321030012 is a wasteful number, since it uses less digits than its factorization.

20321030012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 553 counting only the distinct ones).

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

Adding to 20321030012 its reverse (21003012302), we get a palindrome (41324042314).

The spelling of 20321030012 in words is "twenty billion, three hundred twenty-one million, thirty thousand, twelve".