20321110212 has 24 divisors (see below), whose sum is σ = 51063302976. Its totient is φ = 6252649248.

The previous prime is 20321110193. The next prime is 20321110241. The reversal of 20321110212 is 21201112302.

It is a junction number, because it is equal to n+sod(n) for n = 20321110191 and 20321110200.

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 7 ways as a sum of consecutive naturals, for example, 65131608 + ... + 65131919.

It is an arithmetic number, because the mean of its divisors is an integer number (2127637624).

Almost surely, 2^20321110212 is an apocalyptic number.

It is an amenable number.

20321110212 is an abundant number, since it is smaller than the sum of its proper divisors (30742192764).

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

20321110212 is a wasteful number, since it uses less digits than its factorization.

20321110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130263547 (or 130263545 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20321110212 its reverse (21201112302), we get a palindrome (41522222514).

The spelling of 20321110212 in words is "twenty billion, three hundred twenty-one million, one hundred ten thousand, two hundred twelve".