11041821 has 12 divisors (see below), whose sum is σ = 18227872. Its totient is φ = 6309576.

The previous prime is 11041819. The next prime is 11041843. The reversal of 11041821 is 12814011.

11041821 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11041821 - 2¹ = 11041819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11041794 and 11041803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11041021) 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, 87571 + ... + 87696.

Almost surely, 2^11041821 is an apocalyptic number.

It is an amenable number.

11041821 is a deficient number, since it is larger than the sum of its proper divisors (7186051).

11041821 is a wasteful number, since it uses less digits than its factorization.

11041821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175280 (or 175277 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11041821 is about 3322.9235621663. The cubic root of 11041821 is about 222.6794982964.

Adding to 11041821 its reverse (12814011), we get a palindrome (23855832).

The spelling of 11041821 in words is "eleven million, forty-one thousand, eight hundred twenty-one".