11071321 has 2 divisors, whose sum is σ = 11071322. Its totient is φ = 11071320.

The previous prime is 11071283. The next prime is 11071331. The reversal of 11071321 is 12317011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 2433600 = 2939^2 + 1560^2 .

It is a cyclic number.

It is not a de Polignac number, because 11071321 - 2¹¹ = 11069273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11071295 and 11071304.

It is not a weakly prime, because it can be changed into another prime (11071331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535660 + 5535661.

It is an arithmetic number, because the mean of its divisors is an integer number (5535661).

Almost surely, 2^11071321 is an apocalyptic number.

It is an amenable number.

11071321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11071321 is an equidigital number, since it uses as much as digits as its factorization.

11071321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 11071321 is about 3327.3594635987. The cubic root of 11071321 is about 222.8776299808.

Adding to 11071321 its reverse (12317011), we get a palindrome (23388332).

The spelling of 11071321 in words is "eleven million, seventy-one thousand, three hundred twenty-one".