11000200021 has 2 divisors, whose sum is σ = 11000200022. Its totient is φ = 11000200020.

The previous prime is 11000200019. The next prime is 11000200049. The reversal of 11000200021 is 12000200011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6589380625 + 4410819396 = 81175^2 + 66414^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000200021 - 2¹ = 11000200019 is a prime.

Together with 11000200019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11000199977 and 11000200013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000200061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500100010 + 5500100011.

It is an arithmetic number, because the mean of its divisors is an integer number (5500100011).

Almost surely, 2^11000200021 is an apocalyptic number.

It is an amenable number.

11000200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000200021 is an equidigital number, since it uses as much as digits as its factorization.

11000200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 11000200021 its reverse (12000200011), we get a palindrome (23000400032).

The spelling of 11000200021 in words is "eleven billion, two hundred thousand, twenty-one".