11300021 has 4 divisors (see below), whose sum is σ = 11309100. Its totient is φ = 11290944.

The previous prime is 11300017. The next prime is 11300057. The reversal of 11300021 is 12000311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 10329796 = 985^2 + 3214^2 .

It is a cyclic number.

It is not a de Polignac number, because 11300021 - 2² = 11300017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11299981 and 11300008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11300071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (2827275).

Almost surely, 2^11300021 is an apocalyptic number.

It is an amenable number.

11300021 is a deficient number, since it is larger than the sum of its proper divisors (9079).

11300021 is an equidigital number, since it uses as much as digits as its factorization.

11300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9078.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 11300021 is about 3361.5503863545. The cubic root of 11300021 is about 224.4018416690.

Adding to 11300021 its reverse (12000311), we get a palindrome (23300332).

The spelling of 11300021 in words is "eleven million, three hundred thousand, twenty-one".