11007044521 has 4 divisors (see below), whose sum is σ = 12007684944. Its totient is φ = 10006404100.

The previous prime is 11007044513. The next prime is 11007044561. The reversal of 11007044521 is 12544070011.

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: 12544070011 = 11 ⋅1140370001.

It is not a de Polignac number, because 11007044521 - 2³ = 11007044513 is a prime.

It is a super-2 number, since 2×11007044521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11007044561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500320195 + ... + 500320216.

It is an arithmetic number, because the mean of its divisors is an integer number (3001921236).

Almost surely, 2^11007044521 is an apocalyptic number.

11007044521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11007044521 is a deficient number, since it is larger than the sum of its proper divisors (1000640423).

11007044521 is a wasteful number, since it uses less digits than its factorization.

11007044521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000640422.

The product of its (nonzero) digits is 1120, while the sum is 25.

The spelling of 11007044521 in words is "eleven billion, seven million, forty-four thousand, five hundred twenty-one".