11111221112223 has 16 divisors (see below), whose sum is σ = 14838676125696. Its totient is φ = 7395624360960.

The previous prime is 11111221112129. The next prime is 11111221112267. The reversal of 11111221112223 is 32221112211111.

It is not a de Polignac number, because 11111221112223 - 2³² = 11106926144927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11111221112223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111225112223) 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, 53677240 + ... + 53883842.

It is an arithmetic number, because the mean of its divisors is an integer number (927417257856).

Almost surely, 2^{11111221112223} is an apocalyptic number.

11111221112223 is a deficient number, since it is larger than the sum of its proper divisors (3727455013473).

11111221112223 is a wasteful number, since it uses less digits than its factorization.

11111221112223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235214.

The product of its digits is 96, while the sum is 21.

Adding to 11111221112223 its reverse (32221112211111), we get a palindrome (43332333323334).

The spelling of 11111221112223 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twenty-three".