11301020221 has 2 divisors, whose sum is σ = 11301020222. Its totient is φ = 11301020220.

The previous prime is 11301020219. The next prime is 11301020243. The reversal of 11301020221 is 12202010311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8392575321 + 2908444900 = 91611^2 + 53930^2 .

It is a cyclic number.

It is not a de Polignac number, because 11301020221 - 2¹ = 11301020219 is a prime.

Together with 11301020219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11301020251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5650510110 + 5650510111.

It is an arithmetic number, because the mean of its divisors is an integer number (5650510111).

Almost surely, 2^11301020221 is an apocalyptic number.

It is an amenable number.

11301020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11301020221 is an equidigital number, since it uses as much as digits as its factorization.

11301020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11301020221 its reverse (12202010311), we get a palindrome (23503030532).

The spelling of 11301020221 in words is "eleven billion, three hundred one million, twenty thousand, two hundred twenty-one".