20321112321222 has 16 divisors (see below), whose sum is σ = 40643936827632. Its totient is φ = 6773418742880.

The previous prime is 20321112321221. The next prime is 20321112321239. The reversal of 20321112321222 is 22212321112302.

It is a junction number, because it is equal to n+sod(n) for n = 20321112321192 and 20321112321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321112321221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71186733 + ... + 71471624.

It is an arithmetic number, because the mean of its divisors is an integer number (2540246051727).

Almost surely, 2^{20321112321222} is an apocalyptic number.

20321112321222 is an abundant number, since it is smaller than the sum of its proper divisors (20322824506410).

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

20321112321222 is a wasteful number, since it uses less digits than its factorization.

20321112321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142682103.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20321112321222 its reverse (22212321112302), we get a palindrome (42533433433524).

The spelling of 20321112321222 in words is "twenty trillion, three hundred twenty-one billion, one hundred twelve million, three hundred twenty-one thousand, two hundred twenty-two".