20021011020011 has 8 divisors (see below), whose sum is σ = 20141192423520. Its totient is φ = 19900833130048.

The previous prime is 20021011019983. The next prime is 20021011020019. The reversal of 20021011020011 is 11002011012002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021011020011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20021011019974 and 20021011020001.

It is not an unprimeable number, because it can be changed into a prime (20021011020019) 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, 11035805 + ... + 12721281.

It is an arithmetic number, because the mean of its divisors is an integer number (2517649052940).

Almost surely, 2^{20021011020011} is an apocalyptic number.

20021011020011 is a deficient number, since it is larger than the sum of its proper divisors (120181403509).

20021011020011 is a wasteful number, since it uses less digits than its factorization.

20021011020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756773.

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

Adding to 20021011020011 its reverse (11002011012002), we get a palindrome (31023022032013).

The spelling of 20021011020011 in words is "twenty trillion, twenty-one billion, eleven million, twenty thousand, eleven".