11122223 has 4 divisors (see below), whose sum is σ = 12711120. Its totient is φ = 9533328.

The previous prime is 11122219. The next prime is 11122229. The reversal of 11122223 is 32222111.

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: 32222111 = 1523 ⋅21157.

It is not a de Polignac number, because 11122223 - 2² = 11122219 is a prime.

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 = 11122198 and 11122207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122229) 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, 794438 + ... + 794451.

It is an arithmetic number, because the mean of its divisors is an integer number (3177780).

Almost surely, 2^11122223 is an apocalyptic number.

11122223 is a deficient number, since it is larger than the sum of its proper divisors (1588897).

11122223 is an equidigital number, since it uses as much as digits as its factorization.

11122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588896.

The product of its digits is 48, while the sum is 14.

The square root of 11122223 is about 3334.9997001499. Note that the first 3 decimals coincide. The cubic root of 11122223 is about 223.2186785561.

Adding to 11122223 its reverse (32222111), we get a palindrome (43344334).

It can be divided in two parts, 1112 and 2223, that multiplied together give a triangular number (2471976 = T₂₂₂₃).

The spelling of 11122223 in words is "eleven million, one hundred twenty-two thousand, two hundred twenty-three".