11221601 has 2 divisors, whose sum is σ = 11221602. Its totient is φ = 11221600.

The previous prime is 11221559. The next prime is 11221627. The reversal of 11221601 is 10612211.

11221601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 3904576 = 2705^2 + 1976^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221601 - 2¹⁸ = 10959457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11221501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610800 + 5610801.

It is an arithmetic number, because the mean of its divisors is an integer number (5610801).

Almost surely, 2^11221601 is an apocalyptic number.

It is an amenable number.

11221601 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221601 is an equidigital number, since it uses as much as digits as its factorization.

11221601 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 14.

The square root of 11221601 is about 3349.8658182082. The cubic root of 11221601 is about 223.8815341379.

Adding to 11221601 its reverse (10612211), we get a palindrome (21833812).

The spelling of 11221601 in words is "eleven million, two hundred twenty-one thousand, six hundred one".