20202021101011 has 4 divisors (see below), whose sum is σ = 20209107046024. Its totient is φ = 20194935156000.

The previous prime is 20202021100997. The next prime is 20202021101027. The reversal of 20202021101011 is 11010112020202.

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

It is a cyclic number.

It is not a de Polignac number, because 20202021101011 - 2¹³ = 20202021092819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202021100982 and 20202021101000.

It is not an unprimeable number, because it can be changed into a prime (20202021105011) 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, 3542968230 + ... + 3542973931.

It is an arithmetic number, because the mean of its divisors is an integer number (5052276761506).

Almost surely, 2^{20202021101011} is an apocalyptic number.

20202021101011 is a deficient number, since it is larger than the sum of its proper divisors (7085945013).

20202021101011 is an equidigital number, since it uses as much as digits as its factorization.

20202021101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085945012.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20202021101011 its reverse (11010112020202), we get a palindrome (31212133121213).

It can be divided in two parts, 2020202 and 1101011, that multiplied together give a palindrome (2224264624222).

The spelling of 20202021101011 in words is "twenty trillion, two hundred two billion, twenty-one million, one hundred one thousand, eleven".