1121233111 has 8 divisors (see below), whose sum is σ = 1185843200. Its totient is φ = 1057182840.

The previous prime is 1121233051. The next prime is 1121233117. The reversal of 1121233111 is 1113321211.

It is a happy number.

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 1121233111 - 2²³ = 1112844503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121233117) 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, 135831 + ... + 143848.

It is an arithmetic number, because the mean of its divisors is an integer number (148230400).

Almost surely, 2^1121233111 is an apocalyptic number.

1121233111 is a deficient number, since it is larger than the sum of its proper divisors (64610089).

1121233111 is a wasteful number, since it uses less digits than its factorization.

1121233111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279909.

The product of its digits is 36, while the sum is 16.

The square root of 1121233111 is about 33484.8191125471. The cubic root of 1121233111 is about 1038.8798068688.

Adding to 1121233111 its reverse (1113321211), we get a palindrome (2234554322).

The spelling of 1121233111 in words is "one billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred eleven".