11040334021 has 4 divisors (see below), whose sum is σ = 11689765452. Its totient is φ = 10390902592.

The previous prime is 11040334003. The next prime is 11040334031. The reversal of 11040334021 is 12043304011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9005061025 + 2035272996 = 94895^2 + 45114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11040334021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11040334021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11040334001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324715690 + ... + 324715723.

It is an arithmetic number, because the mean of its divisors is an integer number (2922441363).

Almost surely, 2^11040334021 is an apocalyptic number.

It is an amenable number.

11040334021 is a deficient number, since it is larger than the sum of its proper divisors (649431431).

11040334021 is an equidigital number, since it uses as much as digits as its factorization.

11040334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649431430.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11040334021 its reverse (12043304011), we get a palindrome (23083638032).

The spelling of 11040334021 in words is "eleven billion, forty million, three hundred thirty-four thousand, twenty-one".