20201020212018 has 64 divisors (see below), whose sum is σ = 40927436928000. Its totient is φ = 6646716014400.

The previous prime is 20201020212017. The next prime is 20201020212019. The reversal of 20201020212018 is 81021202010202.

It is an interprime number because it is at equal distance from previous prime (20201020212017) and next prime (20201020212019).

It is a junction number, because it is equal to n+sod(n) for n = 20201020211985 and 20201020212003.

It is not an unprimeable number, because it can be changed into a prime (20201020212017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227826993 + ... + 227915643.

It is an arithmetic number, because the mean of its divisors is an integer number (639491202000).

Almost surely, 2^{20201020212018} is an apocalyptic number.

20201020212018 is an abundant number, since it is smaller than the sum of its proper divisors (20726416715982).

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

20201020212018 is a wasteful number, since it uses less digits than its factorization.

20201020212018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90367.

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 20201020212018 in words is "twenty trillion, two hundred one billion, twenty million, two hundred twelve thousand, eighteen".