21011022000011 has 4 divisors (see below), whose sum is σ = 21011064523800. Its totient is φ = 21010979476224.

The previous prime is 21011021999977. The next prime is 21011022000049. The reversal of 21011022000011 is 11000022011012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21011022000011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21011021999956 and 21011022000001.

It is not an unprimeable number, because it can be changed into a prime (21011022020011) 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, 20511926 + ... + 21511883.

It is an arithmetic number, because the mean of its divisors is an integer number (5252766130950).

Almost surely, 2^{21011022000011} is an apocalyptic number.

21011022000011 is a deficient number, since it is larger than the sum of its proper divisors (42523789).

21011022000011 is an equidigital number, since it uses as much as digits as its factorization.

21011022000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42523788.

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

Adding to 21011022000011 its reverse (11000022011012), we get a palindrome (32011044011023).

The spelling of 21011022000011 in words is "twenty-one trillion, eleven billion, twenty-two million, eleven", and thus it is an aban number and an uban number.