11010721 has 4 divisors (see below), whose sum is σ = 11489472. Its totient is φ = 10531972.

The previous prime is 11010707. The next prime is 11010733. The reversal of 11010721 is 12701011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12701011 = 461 ⋅27551.

It is a cyclic number.

It is not a de Polignac number, because 11010721 - 2¹³ = 11002529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11010421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239341 + ... + 239386.

It is an arithmetic number, because the mean of its divisors is an integer number (2872368).

Almost surely, 2^11010721 is an apocalyptic number.

It is an amenable number.

11010721 is a deficient number, since it is larger than the sum of its proper divisors (478751).

11010721 is an equidigital number, since it uses as much as digits as its factorization.

11010721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478750.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 11010721 is about 3318.2406482954. The cubic root of 11010721 is about 222.4702379920.

Adding to 11010721 its reverse (12701011), we get a palindrome (23711732).

The spelling of 11010721 in words is "eleven million, ten thousand, seven hundred twenty-one".