20211311320320 has 144 divisors (see below), whose sum is σ = 64678211482752. Its totient is φ = 5378967429120.

The previous prime is 20211311320289. The next prime is 20211311320327. The reversal of 20211311320320 is 2302311311202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211311320327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3300451 + ... + 7163490.

It is an arithmetic number, because the mean of its divisors is an integer number (449154246408).

Almost surely, 2^{20211311320320} is an apocalyptic number.

20211311320320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211311320320 is an abundant number, since it is smaller than the sum of its proper divisors (44466900162432).

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

20211311320320 is a wasteful number, since it uses less digits than its factorization.

20211311320320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10464468 (or 10464454 counting only the distinct ones).

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

Adding to 20211311320320 its reverse (2302311311202), we get a palindrome (22513622631522).

The spelling of 20211311320320 in words is "twenty trillion, two hundred eleven billion, three hundred eleven million, three hundred twenty thousand, three hundred twenty".