11001111223 has 4 divisors (see below), whose sum is σ = 11049151240. Its totient is φ = 10953071208.

The previous prime is 11001111217. The next prime is 11001111229. The reversal of 11001111223 is 32211110011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32211110011 = 311 ⋅103572701.

It is an interprime number because it is at equal distance from previous prime (11001111217) and next prime (11001111229).

It is a cyclic number.

It is not a de Polignac number, because 11001111223 - 2²⁵ = 10967556791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001111229) 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, 24019665 + ... + 24020122.

It is an arithmetic number, because the mean of its divisors is an integer number (2762287810).

Almost surely, 2^11001111223 is an apocalyptic number.

11001111223 is a deficient number, since it is larger than the sum of its proper divisors (48040017).

11001111223 is an equidigital number, since it uses as much as digits as its factorization.

11001111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48040016.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11001111223 its reverse (32211110011), we get a palindrome (43212221234).

The spelling of 11001111223 in words is "eleven billion, one million, one hundred eleven thousand, two hundred twenty-three".