20201121121182 has 16 divisors (see below), whose sum is σ = 40627953095040. Its totient is φ = 6696088564952.

The previous prime is 20201121121091. The next prime is 20201121121183. The reversal of 20201121121182 is 28112112110202.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9404617698 + ... + 9404619845.

It is an arithmetic number, because the mean of its divisors is an integer number (2539247068440).

Almost surely, 2^{20201121121182} is an apocalyptic number.

20201121121182 is an abundant number, since it is smaller than the sum of its proper divisors (20426831973858).

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

20201121121182 is a wasteful number, since it uses less digits than its factorization.

20201121121182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18809237727.

The product of its (nonzero) digits is 256, while the sum is 24.

Adding to 20201121121182 its reverse (28112112110202), we get a palindrome (48313233231384).

The spelling of 20201121121182 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred eighty-two".