11111112222223 has 12 divisors (see below), whose sum is σ = 12664799360040. Its totient is φ = 9716600159136.

The previous prime is 11111112222169. The next prime is 11111112222253. The reversal of 11111112222223 is 32222221111111.

It is not a de Polignac number, because 11111112222223 - 2¹⁷ = 11111112091151 is a prime.

It is the 3333334-th Hogben number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11111112222194 and 11111112222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111112222253) by changing a digit.

It is a nontrivial repunit in base 3333333.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1730160636 + ... + 1730167057.

It is an arithmetic number, because the mean of its divisors is an integer number (1055399946670).

Almost surely, 2^{11111112222223} is an apocalyptic number.

11111112222223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11111112222223 is a deficient number, since it is larger than the sum of its proper divisors (1553687137817).

11111112222223 is a wasteful number, since it uses less digits than its factorization.

11111112222223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460327738 (or 3460327725 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

Adding to 11111112222223 its reverse (32222221111111), we get a palindrome (43333333333334).

The spelling of 11111112222223 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-three".