1112231121 has 4 divisors (see below), whose sum is σ = 1482974832. Its totient is φ = 741487412.

The previous prime is 1112231011. The next prime is 1112231123. The reversal of 1112231121 is 1211322111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1112231121 - 2¹⁷ = 1112100049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112231121.

It is not an unprimeable number, because it can be changed into a prime (1112231123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185371851 + ... + 185371856.

It is an arithmetic number, because the mean of its divisors is an integer number (370743708).

Almost surely, 2^1112231121 is an apocalyptic number.

It is an amenable number.

1112231121 is a deficient number, since it is larger than the sum of its proper divisors (370743711).

1112231121 is an equidigital number, since it uses as much as digits as its factorization.

1112231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370743710.

The product of its digits is 24, while the sum is 15.

The square root of 1112231121 is about 33350.1292501244. The cubic root of 1112231121 is about 1036.0920648967.

Adding to 1112231121 its reverse (1211322111), we get a palindrome (2323553232).

The spelling of 1112231121 in words is "one billion, one hundred twelve million, two hundred thirty-one thousand, one hundred twenty-one".