21110020200011 has 8 divisors (see below), whose sum is σ = 21148765878240. Its totient is φ = 21071293406208.

The previous prime is 21110020199987. The next prime is 21110020200043. The reversal of 21110020200011 is 11000202001112.

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-21110020200011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110020199965 and 21110020200001.

It is not an unprimeable number, because it can be changed into a prime (21110020500011) 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, 2482376 + ... + 6955733.

It is an arithmetic number, because the mean of its divisors is an integer number (2643595734780).

Almost surely, 2^{21110020200011} is an apocalyptic number.

21110020200011 is a deficient number, since it is larger than the sum of its proper divisors (38745678229).

21110020200011 is an equidigital number, since it uses as much as digits as its factorization.

21110020200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442213.

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

Adding to 21110020200011 its reverse (11000202001112), we get a palindrome (32110222201123).

The spelling of 21110020200011 in words is "twenty-one trillion, one hundred ten billion, twenty million, two hundred thousand, eleven".