20201021110002 has 8 divisors (see below), whose sum is σ = 40402042220016. Its totient is φ = 6733673703332.

The previous prime is 20201021109937. The next prime is 20201021110007. The reversal of 20201021110002 is 20001112010202.

It is a sphenic number, since it is the product of 3 distinct primes.

20201021110002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201021110002.

It is not an unprimeable number, because it can be changed into a prime (20201021110007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683418425828 + ... + 1683418425839.

It is an arithmetic number, because the mean of its divisors is an integer number (5050255277502).

Almost surely, 2^{20201021110002} is an apocalyptic number.

20201021110002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20201021110002 is a wasteful number, since it uses less digits than its factorization.

20201021110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366836851672.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20201021110002 its reverse (20001112010202), we get a palindrome (40202133120204).

The spelling of 20201021110002 in words is "twenty trillion, two hundred one billion, twenty-one million, one hundred ten thousand, two".