20321110123320 has 32 divisors (see below), whose sum is σ = 60963330370320. Its totient is φ = 5418962699520.

The previous prime is 20321110123313. The next prime is 20321110123333. The reversal of 20321110123320 is 2332101112302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84671292061 + ... + 84671292300.

Almost surely, 2^{20321110123320} is an apocalyptic number.

20321110123320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321110123320 is an abundant number, since it is smaller than the sum of its proper divisors (40642220247000).

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

20321110123320 is a wasteful number, since it uses less digits than its factorization.

20321110123320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169342584375 (or 169342584371 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20321110123320 its reverse (2332101112302), we get a palindrome (22653211235622).

The spelling of 20321110123320 in words is "twenty trillion, three hundred twenty-one billion, one hundred ten million, one hundred twenty-three thousand, three hundred twenty".