10661201 has 2 divisors, whose sum is σ = 10661202. Its totient is φ = 10661200.

The previous prime is 10661191. The next prime is 10661207. The reversal of 10661201 is 10216601.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 421201 = 3200^2 + 649^2 .

It is an emirp because it is prime and its reverse (10216601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10661201 - 2¹⁸ = 10399057 is a prime.

It is a super-2 number, since 2×10661201² = 227322413524802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10661201.

It is not a weakly prime, because it can be changed into another prime (10661207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330600 + 5330601.

It is an arithmetic number, because the mean of its divisors is an integer number (5330601).

Almost surely, 2^10661201 is an apocalyptic number.

It is an amenable number.

10661201 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661201 is an equidigital number, since it uses as much as digits as its factorization.

10661201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 10661201 is about 3265.1494605914. The cubic root of 10661201 is about 220.0908784324.

Adding to 10661201 its reverse (10216601), we get a palindrome (20877802).

The spelling of 10661201 in words is "ten million, six hundred sixty-one thousand, two hundred one".