20201010021011 has 4 divisors (see below), whose sum is σ = 20289224038800. Its totient is φ = 20112796003224.

The previous prime is 20201010020999. The next prime is 20201010021013. The reversal of 20201010021011 is 11012001010202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201010021011 is a prime.

It is a super-3 number, since 3×20201010021011³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201010020983 and 20201010021001.

It is not an unprimeable number, because it can be changed into a prime (20201010021013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44107008551 + ... + 44107009008.

It is an arithmetic number, because the mean of its divisors is an integer number (5072306009700).

Almost surely, 2^{20201010021011} is an apocalyptic number.

20201010021011 is a deficient number, since it is larger than the sum of its proper divisors (88214017789).

20201010021011 is an equidigital number, since it uses as much as digits as its factorization.

20201010021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88214017788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20201010021011 its reverse (11012001010202), we get a palindrome (31213011031213).

The spelling of 20201010021011 in words is "twenty trillion, two hundred one billion, ten million, twenty-one thousand, eleven".