11301012221 has 2 divisors, whose sum is σ = 11301012222. Its totient is φ = 11301012220.

The previous prime is 11301012209. The next prime is 11301012241. The reversal of 11301012221 is 12221010311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11233032196 + 67980025 = 105986^2 + 8245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11301012221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11301012196 and 11301012205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11301012241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5650506110 + 5650506111.

It is an arithmetic number, because the mean of its divisors is an integer number (5650506111).

Almost surely, 2^11301012221 is an apocalyptic number.

It is an amenable number.

11301012221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11301012221 is an equidigital number, since it uses as much as digits as its factorization.

11301012221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11301012221 its reverse (12221010311), we get a palindrome (23522022532).

The spelling of 11301012221 in words is "eleven billion, three hundred one million, twelve thousand, two hundred twenty-one".