20211320320120 has 32 divisors (see below), whose sum is σ = 45482925042720. Its totient is φ = 8083202915200.

The previous prime is 20211320320069. The next prime is 20211320320141. The reversal of 20211320320120 is 2102302311202.

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, 41165812 + ... + 41653891.

It is an arithmetic number, because the mean of its divisors is an integer number (1421341407585).

Almost surely, 2^{20211320320120} is an apocalyptic number.

20211320320120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211320320120 is an abundant number, since it is smaller than the sum of its proper divisors (25271604722600).

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

20211320320120 is a wasteful number, since it uses less digits than its factorization.

20211320320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82825815 (or 82825811 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20211320320120 its reverse (2102302311202), we get a palindrome (22313622631322).

The spelling of 20211320320120 in words is "twenty trillion, two hundred eleven billion, three hundred twenty million, three hundred twenty thousand, one hundred twenty".