11017421 has 4 divisors (see below), whose sum is σ = 11040000. Its totient is φ = 10994844.

The previous prime is 11017373. The next prime is 11017441. The reversal of 11017421 is 12471011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11017421 - 2¹⁴ = 11001037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 11017421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11017441) 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 in 3 ways as a sum of consecutive naturals, for example, 10541 + ... + 11538.

It is an arithmetic number, because the mean of its divisors is an integer number (2760000).

Almost surely, 2^11017421 is an apocalyptic number.

It is an amenable number.

11017421 is a deficient number, since it is larger than the sum of its proper divisors (22579).

11017421 is an equidigital number, since it uses as much as digits as its factorization.

11017421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22578.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 11017421 is about 3319.2500659034. The cubic root of 11017421 is about 222.5153530625.

Adding to 11017421 its reverse (12471011), we get a palindrome (23488432).

The spelling of 11017421 in words is "eleven million, seventeen thousand, four hundred twenty-one".