11119943521 has 16 divisors (see below), whose sum is σ = 11668366080. Its totient is φ = 10588331520.

The previous prime is 11119943519. The next prime is 11119943531. The reversal of 11119943521 is 12534991111.

It is a cyclic number.

It is not a de Polignac number, because 11119943521 - 2¹ = 11119943519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11119943501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248311 + ... + 289651.

It is an arithmetic number, because the mean of its divisors is an integer number (729272880).

Almost surely, 2^11119943521 is an apocalyptic number.

It is an amenable number.

11119943521 is a deficient number, since it is larger than the sum of its proper divisors (548422559).

11119943521 is an equidigital number, since it uses as much as digits as its factorization.

11119943521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41544.

The product of its digits is 9720, while the sum is 37.

The spelling of 11119943521 in words is "eleven billion, one hundred nineteen million, nine hundred forty-three thousand, five hundred twenty-one".