20201121121184 has 24 divisors (see below), whose sum is σ = 39771513532548. Its totient is φ = 10100419271680.

The previous prime is 20201121121183. The next prime is 20201121121187. The reversal of 20201121121184 is 48112112110202.

It can be written as a sum of positive squares in 2 ways, for example, as 15254180035600 + 4946941085584 = 3905660^2 + 2224172^2 .

It is not an unprimeable number, because it can be changed into a prime (20201121121183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2072777 + ... + 6685704.

Almost surely, 2^{20201121121184} is an apocalyptic number.

It is an amenable number.

20201121121184 is a deficient number, since it is larger than the sum of its proper divisors (19570392411364).

20201121121184 is an equidigital number, since it uses as much as digits as its factorization.

20201121121184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830568 (or 8830560 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 26.

Adding to 20201121121184 its reverse (48112112110202), we get a palindrome (68313233231386).

The spelling of 20201121121184 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred eighty-four".