11223321999 has 16 divisors (see below), whose sum is σ = 15373159008. Its totient is φ = 7277962752.

The previous prime is 11223321979. The next prime is 11223322009. The reversal of 11223321999 is 99912332211.

It is not a de Polignac number, because 11223321999 - 2²⁰ = 11222273423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11223321999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223321979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456099 + ... + 480075.

It is an arithmetic number, because the mean of its divisors is an integer number (960822438).

Almost surely, 2^11223321999 is an apocalyptic number.

11223321999 is a deficient number, since it is larger than the sum of its proper divisors (4149837009).

11223321999 is a wasteful number, since it uses less digits than its factorization.

11223321999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28234.

The product of its digits is 52488, while the sum is 42.

The spelling of 11223321999 in words is "eleven billion, two hundred twenty-three million, three hundred twenty-one thousand, nine hundred ninety-nine".