20121320321322 has 48 divisors (see below), whose sum is σ = 45174787814016. Its totient is φ = 5967638512000.

The previous prime is 20121320321309. The next prime is 20121320321351. The reversal of 20121320321322 is 22312302312102.

It is a junction number, because it is equal to n+sod(n) for n = 20121320321292 and 20121320321301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294809679 + ... + 294877922.

It is an arithmetic number, because the mean of its divisors is an integer number (941141412792).

Almost surely, 2^{20121320321322} is an apocalyptic number.

20121320321322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121320321322 is an abundant number, since it is smaller than the sum of its proper divisors (25053467492694).

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

20121320321322 is a wasteful number, since it uses less digits than its factorization.

20121320321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589687675 (or 589687664 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20121320321322 its reverse (22312302312102), we get a palindrome (42433622633424).

The spelling of 20121320321322 in words is "twenty trillion, one hundred twenty-one billion, three hundred twenty million, three hundred twenty-one thousand, three hundred twenty-two".