21110002020011 has 8 divisors (see below), whose sum is σ = 21136304524080. Its totient is φ = 21083713523712.

The previous prime is 21110002019989. The next prime is 21110002020077. The reversal of 21110002020011 is 11002020001112.

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 21110002020011 - 2⁶ = 21110002019947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110002019974 and 21110002020001.

It is not an unprimeable number, because it can be changed into a prime (21110002020511) 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, 484406 + ... + 6515723.

It is an arithmetic number, because the mean of its divisors is an integer number (2642038065510).

Almost surely, 2^{21110002020011} is an apocalyptic number.

21110002020011 is a deficient number, since it is larger than the sum of its proper divisors (26302504069).

21110002020011 is a wasteful number, since it uses less digits than its factorization.

21110002020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7003885.

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

Adding to 21110002020011 its reverse (11002020001112), we get a palindrome (32112022021123).

The spelling of 21110002020011 in words is "twenty-one trillion, one hundred ten billion, two million, twenty thousand, eleven".