20021020110011 has 8 divisors (see below), whose sum is σ = 20032066167264. Its totient is φ = 20009975166720.

The previous prime is 20021020110001. The next prime is 20021020110029. The reversal of 20021020110011 is 11001102012002.

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

It is a cyclic number.

It is not a de Polignac number, because 20021020110011 - 2³⁴ = 20003840240827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20021020109974 and 20021020110001.

It is not an unprimeable number, because it can be changed into a prime (20021020110001) 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, 37052321 + ... + 37588781.

It is an arithmetic number, because the mean of its divisors is an integer number (2504008270908).

Almost surely, 2^{20021020110011} is an apocalyptic number.

20021020110011 is a deficient number, since it is larger than the sum of its proper divisors (11046057253).

20021020110011 is a wasteful number, since it uses less digits than its factorization.

20021020110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556981.

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

Adding to 20021020110011 its reverse (11001102012002), we get a palindrome (31022122122013).

The spelling of 20021020110011 in words is "twenty trillion, twenty-one billion, twenty million, one hundred ten thousand, eleven".