11040043321 has 24 divisors (see below), whose sum is σ = 12172211064. Its totient is φ = 9977856000.

The previous prime is 11040043303. The next prime is 11040043327. The reversal of 11040043321 is 12334004011.

It can be written as a sum of positive squares in 12 ways, for example, as 4020954921 + 7019088400 = 63411^2 + 83780^2 .

It is not a de Polignac number, because 11040043321 - 2⁷ = 11040043193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11040043327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2757321 + ... + 2761321.

It is an arithmetic number, because the mean of its divisors is an integer number (507175461).

Almost surely, 2^11040043321 is an apocalyptic number.

It is an amenable number.

11040043321 is a deficient number, since it is larger than the sum of its proper divisors (1132167743).

11040043321 is a wasteful number, since it uses less digits than its factorization.

11040043321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269 (or 4240 counting only the distinct ones).

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

Adding to 11040043321 its reverse (12334004011), we get a palindrome (23374047332).

The spelling of 11040043321 in words is "eleven billion, forty million, forty-three thousand, three hundred twenty-one".