20321022212 has 12 divisors (see below), whose sum is σ = 35564084556. Its totient is φ = 10159855200.

The previous prime is 20321022203. The next prime is 20321022247. The reversal of 20321022212 is 21222012302.

It can be written as a sum of positive squares in 2 ways, for example, as 19214395456 + 1106626756 = 138616^2 + 33266^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90623 + ... + 221030.

It is an arithmetic number, because the mean of its divisors is an integer number (2963673713).

Almost surely, 2^20321022212 is an apocalyptic number.

It is an amenable number.

20321022212 is a deficient number, since it is larger than the sum of its proper divisors (15243062344).

20321022212 is a wasteful number, since it uses less digits than its factorization.

20321022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327958 (or 327956 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20321022212 its reverse (21222012302), we get a palindrome (41543034514).

The spelling of 20321022212 in words is "twenty billion, three hundred twenty-one million, twenty-two thousand, two hundred twelve".