11221757 has 2 divisors, whose sum is σ = 11221758. Its totient is φ = 11221756.

The previous prime is 11221739. The next prime is 11221781. The reversal of 11221757 is 75712211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10719076 + 502681 = 3274^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221757 - 2⁸ = 11221501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610878 + 5610879.

It is an arithmetic number, because the mean of its divisors is an integer number (5610879).

Almost surely, 2^11221757 is an apocalyptic number.

It is an amenable number.

11221757 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221757 is an equidigital number, since it uses as much as digits as its factorization.

11221757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 980, while the sum is 26.

The square root of 11221757 is about 3349.8891026421. The cubic root of 11221757 is about 223.8825715822.

Adding to 11221757 its reverse (75712211), we get a palindrome (86933968).

The spelling of 11221757 in words is "eleven million, two hundred twenty-one thousand, seven hundred fifty-seven".