1121224111 has 8 divisors (see below), whose sum is σ = 1281988224. Its totient is φ = 960607320.

The previous prime is 1121224109. The next prime is 1121224157. The reversal of 1121224111 is 1114221211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121224111 - 2¹ = 1121224109 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 (1121224211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20005 + ... + 51406.

It is an arithmetic number, because the mean of its divisors is an integer number (160248528).

Almost surely, 2^1121224111 is an apocalyptic number.

1121224111 is a deficient number, since it is larger than the sum of its proper divisors (160764113).

1121224111 is an equidigital number, since it uses as much as digits as its factorization.

1121224111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73661.

The product of its digits is 32, while the sum is 16.

The square root of 1121224111 is about 33484.6847230193. The cubic root of 1121224111 is about 1038.8770272079.

Adding to 1121224111 its reverse (1114221211), we get a palindrome (2235445322).

The spelling of 1121224111 in words is "one billion, one hundred twenty-one million, two hundred twenty-four thousand, one hundred eleven".