11221641 has 12 divisors (see below), whose sum is σ = 16240068. Its totient is φ = 7466784.

The previous prime is 11221627. The next prime is 11221643. The reversal of 11221641 is 14612211.

11221641 is a `hidden beast` number, since 1 + 1 + 2 + 21 + 641 = 666.

11221641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3404025 + 7817616 = 1845^2 + 2796^2 .

It is not a de Polignac number, because 11221641 - 2¹⁸ = 10959497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6151 + ... + 7763.

It is an arithmetic number, because the mean of its divisors is an integer number (1353339).

Almost surely, 2^11221641 is an apocalyptic number.

It is an amenable number.

11221641 is a deficient number, since it is larger than the sum of its proper divisors (5018427).

11221641 is a wasteful number, since it uses less digits than its factorization.

11221641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2389 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 11221641 is about 3349.8717885913. The cubic root of 11221641 is about 223.8818001502.

Adding to 11221641 its reverse (14612211), we get a palindrome (25833852).

The spelling of 11221641 in words is "eleven million, two hundred twenty-one thousand, six hundred forty-one".