1111122223 has 8 divisors (see below), whose sum is σ = 1170262400. Its totient is φ = 1052048088.

The previous prime is 1111122179. The next prime is 1111122283. The reversal of 1111122223 is 3222211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111122223 - 2¹⁷ = 1110991151 is a prime.

It is the 33334-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 = 1111122197 and 1111122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111122283) by changing a digit.

It is a nontrivial repunit in base 33333.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20140 + ... + 51262.

It is an arithmetic number, because the mean of its divisors is an integer number (146282800).

Almost surely, 2^1111122223 is an apocalyptic number.

1111122223 is a deficient number, since it is larger than the sum of its proper divisors (59140177).

1111122223 is a wasteful number, since it uses less digits than its factorization.

1111122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33021.

The product of its digits is 48, while the sum is 16.

The square root of 1111122223 is about 33333.5000112499. The cubic root of 1111122223 is about 1035.7476213620.

Adding to 1111122223 its reverse (3222211111), we get a palindrome (4333333334).

It can be divided in two parts, 11111 and 22223, that multiplied together give a triangular number (246919753 = T₂₂₂₂₂).

The spelling of 1111122223 in words is "one billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-three".